Snowman, J., & Biehler, R. F. (2006). Psychology applied to teaching (Eleventh edition.). Houghton Mifflin Co..
Lua i Stíl Chicago (17ú heag.)Snowman, Jack, agus Robert F. Biehler. Psychology Applied to Teaching. Eleventh edition. Boston: Houghton Mifflin Co., 2006.
Lua MLA (8ú heag.)Snowman, Jack, agus Robert F. Biehler. Psychology Applied to Teaching. Eleventh edition. Houghton Mifflin Co., 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.