APA (7e ed.) Bronvermelding

Não informado. (1933). Bibliography and Index of Geology Exclusive of North America. Geological Society of America.

Chicago (17e ed.) Bronvermelding

Não informado. Bibliography and Index of Geology Exclusive of North America. Washington: Geological Society of America, 1933.

MLA (8e ed.) Bronvermelding

Não informado. Bibliography and Index of Geology Exclusive of North America. Geological Society of America, 1933.

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