APA (7th ed.) Zitazioa
Gage, N. L. (1979). The scientific basis of he art of teaching.
Chicago Style (17th ed.) Zitazioa
Gage, Nathaniel Lees. The Scientific Basis of He Art of Teaching. 1979.
MLA (9th ed.) Zitazioa
Gage, Nathaniel Lees. The Scientific Basis of He Art of Teaching. 1979.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.