APA (7th ed.) Zitazioa
McGraw-Hill Companies. (2007). McGraw-Hill encyclopedia of science & technology (10th ed.). McGraw-Hill.
Chicago Style (17th ed.) Zitazioa
McGraw-Hill Companies. McGraw-Hill Encyclopedia of Science & Technology. 10th ed. New York: McGraw-Hill, 2007.
MLA (9th ed.) Zitazioa
McGraw-Hill Companies. McGraw-Hill Encyclopedia of Science & Technology. 10th ed. McGraw-Hill, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.