Popov, H. (1970). Tortured for his faith: An epic of christian courage and heroism in our day. Lakeland.
Chicago-referens (17:e uppl.)Popov, Haralan. Tortured for His Faith: An Epic of Christian Courage and Heroism in Our Day. London: Lakeland, 1970.
MLA-referens (9:e uppl.)Popov, Haralan. Tortured for His Faith: An Epic of Christian Courage and Heroism in Our Day. Lakeland, 1970.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.