^Engels, Johannes. Macedonians and Greeks. Roisman, Joseph; Worthington, Ian (编). A Companion to Ancient Macedonia. Wiley-Blackwell. 2010: 94. ISBN 978-1-4051-7936-2（英语）. However, with respect to the discussion in this chapter it seems to be quite clear that (a) ancient Macedonian at some date during the Hellenistic or Roman imperial era was completely replaced by koine Greek and died out, and (b) that ancient Macedonian has no relationship with modern Macedonian which together with Bulgarian belongs to the eastern branch of southern Slavonic languages.