Cita APA (7th ed.)

Paszkowiak, A. (1976). Bulgarien. Brockhaus.

Cita Chicago (17th ed.)

Paszkowiak, Alfred. Bulgarien. Leipzig: Brockhaus, 1976.

Cita MLA (8th ed.)

Paszkowiak, Alfred. Bulgarien. Brockhaus, 1976.