Citazione Stile APA (7a Edizione)

Luckenbill, J., Thompson, J., & Subramaniam, A. (2019). This is play: Environments and interactions that engage infants and toddlers. National Association for the Education of Young Children.

Citazione stile Chigago Style (17a edizione)

Luckenbill, Julia, Janet Thompson, e Aarti Subramaniam. This Is Play: Environments and Interactions That Engage Infants and Toddlers. Washington, District of Columbia: National Association for the Education of Young Children, 2019.

Citatione MLA (9a ed.)

Luckenbill, Julia, et al. This Is Play: Environments and Interactions That Engage Infants and Toddlers. National Association for the Education of Young Children, 2019.