Gage, N. L., & Berliner, D. C. (1984). Educational psychology (Third edition.). Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Gage, N. L., agus David C. Berliner. Educational Psychology. Third edition. Boston: Houghton Mifflin, 1984.
Lua MLA (8ú heag.)Gage, N. L., agus David C. Berliner. Educational Psychology. Third edition. Houghton Mifflin, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.