Παραπομπή APA

Chapman, R. E. (1973). Petroleum geology: A concise study. Elsevier Scientific Pub. Co..

Παραπομπή Chicago Style

Chapman, Richard E. Petroleum Geology: A Concise Study. Amsterdam, New York: Elsevier Scientific Pub. Co., 1973.

Παραπομπή MLA

Chapman, Richard E. Petroleum Geology: A Concise Study. Elsevier Scientific Pub. Co., 1973.