Fortune Dimitar Ratchkov sebagai Ivan Georgiev "'Bulgarian Rhapsody' Enters Oscars 2014 Foreign Language Film Contest". Novinite. Diakses tanggal 5 September
блъгарский язик. (the entry on царь in Naiden Gerov's Dictionary of the BulgarianLanguage) Симеонова, Маргарита. Речник на езика на Васил Левски. София, ИК
ISBN 978-1-85065-276-2. The Pomaks, known officially in Bulgaria as Bulgarian Muhammadans or Bulgarian Muslims, are an ethno-confessional minority at present numbering
Devil's Mother, Sofia, Fakel Express, 2011 ISBN 978-954-9772-76-0, in Bulgarianlanguage. Wikimedia Commons memiliki media mengenai Oleg Penkovsky. Oleg Penkovsky