APA (7e ed.) Bronvermelding

Não informado. (1992). Post-soviet Geography. V.H. Winston & Sons.

Chicago (17e ed.) Bronvermelding

Não informado. Post-soviet Geography. Silver Spring, Md: V.H. Winston & Sons, 1992.

MLA (8e ed.) Bronvermelding

Não informado. Post-soviet Geography. V.H. Winston & Sons, 1992.

Let op: Deze citaties zijn niet altijd 100% accuraat.