Παραπομπή σε μορφή APA (7η εκδ.)

Campbell, R. W. (1976). Trends in the Soviet oil and gas industry. Published for Resources for the Future by the Johns Hopkins University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Campbell, Robert Wellington. Trends in the Soviet Oil and Gas Industry. Baltimore: Published for Resources for the Future by the Johns Hopkins University Press, 1976.

Παραπομπή σε μορφή MLA (8th εκδ.)

Campbell, Robert Wellington. Trends in the Soviet Oil and Gas Industry. Published for Resources for the Future by the Johns Hopkins University Press, 1976.