APA (7th ed.) Zitazioa
Fisher Investments, Azelton, A. M., & Teufel, A. S. (2009). Fisher Investments on energy. John Wiley & Sons.
Chicago Style (17th ed.) Zitazioa
Fisher Investments, Aaron M. Azelton, eta Andrew S. Teufel. Fisher Investments on Energy. Hoboken, N.J.: John Wiley & Sons, 2009.
MLA (9th ed.) Zitazioa
Fisher Investments, et al. Fisher Investments on Energy. John Wiley & Sons, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.