APA (7th ed.) Zitazioa
(1987). McGraw-Hill encyclopedia of science & technology (6th ed.). McGraw-Hill.
Chicago Style (17th ed.) Zitazioa
McGraw-Hill Encyclopedia of Science & Technology. 6th ed. New York: McGraw-Hill, 1987.
MLA (9th ed.) Zitazioa
McGraw-Hill Encyclopedia of Science & Technology. 6th ed. McGraw-Hill, 1987.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.