Snyder. (1997). Earth Science. New York: Mcgraw - Hill.
Trích dẫn kiểu ChicagoSnyder. Earth Science. New York: Mcgraw - Hill, 1997.
MLA CitationSnyder. Earth Science. New York: Mcgraw - Hill, 1997.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.