एपीए उद्धरण

Peter Bakurdjiev. (1974). Bulgaria: Questions and answers. New Jersey.

शिकागो स्टाइल उद्धरण

Peter Bakurdjiev. Bulgaria: Questions and Answers. New Jersey, 1974.

एमएलए उद्धरण

Peter Bakurdjiev. Bulgaria: Questions and Answers. New Jersey, 1974.