APA-referens (7:e uppl.)

Não informado. (1894). Geological literature added to the Geological Society's Library. Geological Society of London.

Chicago-referens (17:e uppl.)

Não informado. Geological Literature Added to the Geological Society's Library. London: Geological Society of London, 1894.

MLA-referens (8:e uppl.)

Não informado. Geological Literature Added to the Geological Society's Library. Geological Society of London, 1894.

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