Wellhousen, K., & Crowther, I. (2004). Creating effective learning environments. Delmar Learning.
Lua i Stíl Chicago (17ú heag.)Wellhousen, Karyn, agus Ingrid Crowther. Creating Effective Learning Environments. New York: Delmar Learning, 2004.
Lua MLA (8ú heag.)Wellhousen, Karyn, agus Ingrid Crowther. Creating Effective Learning Environments. Delmar Learning, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.