APA (7e ed.) Bronvermelding

Wittmer, D. S., & Petersen, S. H. (2010). Infant and toddler development and responsive program planning: A relationship-based approach (2nd ed.). Pearson.

Chicago (17e ed.) Bronvermelding

Wittmer, Donna Sasse, en Sandra H. Petersen. Infant and Toddler Development and Responsive Program Planning: A Relationship-based Approach. 2nd ed. Boston: Pearson, 2010.

MLA (9e ed.) Bronvermelding

Wittmer, Donna Sasse, en Sandra H. Petersen. Infant and Toddler Development and Responsive Program Planning: A Relationship-based Approach. 2nd ed. Pearson, 2010.