^Barnes, Michael. Interreligious learning: dialogue, spirituality, and the Christian imagination. Cambridge University Press. 2012: 245–246. ISBN 978-1-107-01284-4. In that way, their good Pope died, overwhelmed by the sufferings, torments and dishonours. – Jerome Xavier, Letter to Gasper Fernandes in Lisbon, On the execution of Guru Arjan
^Dehsen, Christian. Philosophers and religious leaders. Routledge. 1999: 14. ISBN 978-1-57958-182-4.
