Cita APA (7a ed.)

Canadian Society of Petroleum Geologists & Embry, A. F. (1978). FIFTY years of Canadian Petroleum Geology. AAPG.

Cita Chicago Style (17a ed.)

Canadian Society of Petroleum Geologists y Ashton F. Embry. FIFTY Years of Canadian Petroleum Geology. Tulsa, Okla.: AAPG, 1978.

Cita MLA (8a ed.)

Canadian Society of Petroleum Geologists y Ashton F. Embry. FIFTY Years of Canadian Petroleum Geology. AAPG, 1978.