Gaya APA

Robers, D, G., Bally, A. (2012). Regional Geology And Tectonics: Principles Of Geologic Analysis volume 1A (Volume 1A). Cina: Elsever.

Gaya MLA

Robers, David, G.., Bally, A.W.. "Regional Geology And Tectonics: Principles Of Geologic Analysis volume 1A". Volume 1A Cina: Elsever, 2012. Text.