Gaya APA

A.A.P.G., . (1966). A history of the american association of petroleum geologist; firsfifty years . american: the american association of perolum geologists.

Gaya MLA

A.A.P.G., . "A history of the american association of petroleum geologist; firsfifty years". american: the american association of perolum geologists, 1966. Text.