Factor, R., & Rothblum, E. (2008). Exploring gender identity and community among three groups of transgender individuals in the United States: MTFs, FTMs, and genderqueers. Health Sociology Review, 17(3), pp.235-253.
Kuper, L. E., Nussbaum, R. & Mustanski, B. (2012). Exploring the Diversity of Gender and Sexual Orientation Identities in an Online Sample of Transgender Individuals. Journal of sex research49(2-3), pp.244-254.
^Roscoe, Will (2000). Changing Ones: Third and Fourth Genders in Native North America. Palgrave Macmillan (June 17, 2000) ISBN 0-312-22479-6
See also: Trumbach, Randolph (1994). London’s Sapphists: From Three Sexes to Four Genders in the Making of Modern Culture. In Third Sex, Third Gender: Beyond Sexual Dimorphism in Culture and History, edited by Gilbert Herdt, 111-36. New York: Zone (MIT). ISBN 978-0-942299-82-3
^ 3.03.1Martin, M. Kay and Voorhies, Barbara (1975). Supernumerary Sexes, chapter 4 of Female of the Species (New York: Columbia University Press, 1975), 23.
^McGee, R. Jon and Richard L. Warms 2011 Anthropological Theory: An Introductory History. New York, McGraw Hill.
^Money, John; Ehrhardt, Anke A. Man & Woman Boy & Girl. Differentiation and dimorphism of gender identity from conception to maturity. USA: The Johns Hopkins University Press. 1972. ISBN 0-8018-1405-7.
^Domurat Dreger, Alice. Hermaphrodites and the Medical Invention of Sex. USA: Harvard University Press. 2001. ISBN 0-674-00189-3.
^LeBow, Diana, Rethinking Matriliny Among the Hopi, p.8.
^Schlegel, Alice, Hopi Gender Ideology of Female Superiority, in Quarterly Journal of Ideology: "A Critique of the Conventional Wisdom", vol. VIII, no. 4, 1984, pp.44–52
^100 Native Americans Who Shaped American History, Juettner, 2007.
^Paths to The Divine: Ancient and Indian By George McLean, Vensus A. George, Quote: Siva: The Hermaphrodite The Lord Shiva is the underlying neutral and changeless reality, the undifferentiated absolute Consciousness, who is the foundation of every change and becoming. The hermaphrodite reality is one which is independent of all distinctions of male and female, the phenomenal and the non-phenomenal, and yet forms the basis of all such distinctions. The Puranas speak of Lord Shiva as the Hermaphrodite reality, though distinctionless within Himself, letting the distinctions of the manifold world spring up from Him. The Puranic thinkers interpreted and represented this hermaphrodite aspect of the Lord Siva in various ways. One such symbol expression is the figure of His Sakti. Another such symbol is the Phallus *(the male reproductive part) and the Yoni (the female reproductive part). A third, a more anthropomorphic metaphor, is that of the union between Siva and His many consorts, such as, Parvati, Uma and others. All these symbolisms express the truth that the variety of this universe stems from the lord Siva through his Sakti. To explain this point very picturesquely, the Puranas apply the mythological story of creation by way of the sexual union between Prajaapati and his daughter to Siva who, by His eternal union with His Sakti creates the world. The Puraanas also use another more sacrificial symbollism to expound the hermaphrodite characteristic of Shiva, according to which the male principle is represented as Fire, the devourer of the offering, and the female principle is the Soma, the devoured offering. In this symbolism, the hermaphrodite is the embodiment of the cosmic sacrifice, through which the universe emerges from the Lord Siva.
^Hijras of Muslim India and Pakistan etransgender.com; Quote: In North India and in Pakistan Hindus and Muslims alike believe in the powers of hijras to bless or curse others. To Hindus and Hindu hijras this is connected to the worship of Bahuchara Mata. Hindus believe that the powers of this feminine aspect of the divine flows in an almost shamanic way through the "eunuchs". In Pakistan and in traditional Indian Muslim families the mukhannath´ power to curse is called "bad du`a". This implies the faith that every supplicational prayer ("du`a") done by a faithful hijra will be fulfilled because she is specially blessed as a compensation for the fact that she is denied to have children and a "normal" family life as a born woman.