APA (7e ed.) Bronvermelding

Não informado. Soviet-bloc research in geophysics, astronomy ans space. Joint Publications Research Service.

Chicago (17e ed.) Bronvermelding

Não informado. Soviet-bloc Research in Geophysics, Astronomy Ans Space. Arlington, Wash: Joint Publications Research Service.

MLA (8e ed.) Bronvermelding

Não informado. Soviet-bloc Research in Geophysics, Astronomy Ans Space. Joint Publications Research Service.

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