Cramer, G., Hurst, B., & Wilson, C. (1996). Teacher study groups for professional development. Phi Delta Kappa Educational Foundation.
Chicago-Zitierstil (17. Ausg.)Cramer, Genny, Beth Hurst, und Cindy Wilson. Teacher Study Groups for Professional Development. Bloomington, Ind: Phi Delta Kappa Educational Foundation, 1996.
MLA-Zitierstil (9. Ausg.)Cramer, Genny, et al. Teacher Study Groups for Professional Development. Phi Delta Kappa Educational Foundation, 1996.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.