APA-referens (7:e uppl.)

Chapman, R. E. (1973). Petroleum geology; a concise study. Elsevier Scientific Pub.

Chicago-referens (17:e uppl.)

Chapman, Richard E. Petroleum Geology; a Concise Study. Amsterdam: Elsevier Scientific Pub, 1973.

MLA-referens (9:e uppl.)

Chapman, Richard E. Petroleum Geology; a Concise Study. Elsevier Scientific Pub, 1973.