Cita APA (7th ed.)
Gage, N., & Berliner, D. C. (1980). Educational psychology.
Cita Chicago (17th ed.)
Gage, N.L, i David C. Berliner. Educational Psychology. 1980.
Cita MLA (9th ed.)
Gage, N.L, i David C. Berliner. Educational Psychology. 1980.
Atenció: Aquestes cites poden no estar 100% correctes.