Παραπομπή APA

Parra, F. R. (2004). Oil politics: A modern history of petroleum. Earthscan.

Παραπομπή Chicago Style

Parra, Francisco R. Oil Politics: A Modern History of Petroleum. London ; New York: Earthscan, 2004.

Παραπομπή MLA

Parra, Francisco R. Oil Politics: A Modern History of Petroleum. Earthscan, 2004.