APA-Zitierstil (7. Ausg.)

Katz, L. G., Evangelou, D., & Hartman, J. A. (1991). The case for mixed-age grouping in early education (2. print.). National Assoc. for the Education of Young Children.

Chicago-Zitierstil (17. Ausg.)

Katz, Lilian G., Demetra Evangelou, und Jeanette A. Hartman. The Case for Mixed-age Grouping in Early Education. 2. print. Washington, D.C: National Assoc. for the Education of Young Children, 1991.

MLA-Zitierstil (9. Ausg.)

Katz, Lilian G., et al. The Case for Mixed-age Grouping in Early Education. 2. print. National Assoc. for the Education of Young Children, 1991.