APA (7e ed.) Bronvermelding

Não informado. (1953). Geological abstracts. American Geological Institute.

Chicago (17e ed.) Bronvermelding

Não informado. Geological Abstracts. New York: American Geological Institute, 1953.

MLA (8e ed.) Bronvermelding

Não informado. Geological Abstracts. American Geological Institute, 1953.

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