APA stil citiranja

Genov, N., & Krasteva, A. (1999). Bulgaria: Bulgaria : 1960 - 1995 : trends of social development. Sofia: National and Global Development.

Chicago stil citiranja

Genov, Nikolai, and Anna Krasteva. Bulgaria: Bulgaria : 1960 - 1995 : trends of social development. Sofia: National and Global Development, 1999.

MLA stil citiranja

Genov, Nikolai, and Anna Krasteva. Bulgaria: Bulgaria : 1960 - 1995 : trends of social development. Sofia: National and Global Development, 1999.