APA (7th ed.) Zitazioa
ebrary, Inc, & Shumenko, R. (2011). Arctic oil and gas: Development and concerns. Nova Science Publishers.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, eta Roman Shumenko. Arctic Oil and Gas: Development and Concerns. Hauppauge, N.Y.: Nova Science Publishers, 2011.
MLA (9th ed.) Zitazioa
ebrary, Inc, eta Roman Shumenko. Arctic Oil and Gas: Development and Concerns. Nova Science Publishers, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.