Não informado. (1785). Bibliography of North American Geology. U.S. Govt. Print. Off.
Style de citation Chicago (17e éd.)Não informado. Bibliography of North American Geology. Washington: U.S. Govt. Print. Off, 1785.
Style de citation MLA (8e éd.)Não informado. Bibliography of North American Geology. U.S. Govt. Print. Off, 1785.
Attention : ces citations peuvent ne pas être correctes à 100%.