Sofia
Sofia(/ˈsoʊfiə,
- ↑Wells, John C. (2008),Longman Pronunciation Dictionary(édisi ka-3rd), Longman,ISBN9781405881180
- ↑Roach, Peter (2011),Cambridge English Pronouncing Dictionary(édisi ka-18th), Cambridge: Cambridge University Press,ISBN9780521152532
- ↑Editors of Britannica."Sofia".Encyclopædia Britannica.Kaarsipinsaking versi asli tanggal 17 Séptémber 2018.Kaaksés12 February2016.CS1 maint: extra text: authors list (link)
- ↑Bulgaria, Hungary, Romania, the Czech Republic, and Slovakia.Britannica Educational Publishing. 1 June 2013.ISBN9781615309870.Kaarsipinsaking versi asli tanggal 21 February 2021.Kaaksés 12 Séptémber 2017.