Bolles, R. C. (1975). Learning theory. Holt, Rinehart and Winston.
Chicago Style (17th ed.) ZitazioaBolles, Robert C. Learning Theory. New York: Holt, Rinehart and Winston, 1975.
MLA (9th ed.) ZitazioaBolles, Robert C. Learning Theory. Holt, Rinehart and Winston, 1975.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.