APA aipamena

(1995). Comparative analysis of petroleum exploration contracts. New York: United nations.

Chicago Style aipamena

Comparative Analysis of Petroleum Exploration Contracts. New York: United nations, 1995.

MLA aipamena

Comparative Analysis of Petroleum Exploration Contracts. New York: United nations, 1995.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.