Tohutoro APA (7th ed.)

ebrary, Inc, & Beltran, A. (2010). A comparative history of national oil companies. P.I.E. Peter Lang.

Tohutoru Kātū Chicago (17th ed.)

ebrary, Inc, me Alain Beltran. A Comparative History of National Oil Companies. Bruxelles ; New York: P.I.E. Peter Lang, 2010.

Tohutoro MLA (9th ed.)

ebrary, Inc, me Alain Beltran. A Comparative History of National Oil Companies. P.I.E. Peter Lang, 2010.