APA (7e ed.) Bronvermelding

Não informado. (1785). Bibliography of North American Geology. U.S. Govt. Print. Off.

Chicago (17e ed.) Bronvermelding

Não informado. Bibliography of North American Geology. Washington: U.S. Govt. Print. Off, 1785.

MLA (8e ed.) Bronvermelding

Não informado. Bibliography of North American Geology. U.S. Govt. Print. Off, 1785.

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