Cita APA (7th ed.)

National Association for the Education of Young Children, Musick, J. S., & Weissbourd, B. (1981). Infants, their social environments. National Association for the Education of Young Children.

Cita Chicago (17th ed.)

National Association for the Education of Young Children, Judith S. Musick, i Bernice Weissbourd. Infants, Their Social Environments. Washington, D.C.: National Association for the Education of Young Children, 1981.

Cita MLA (8th ed.)

National Association for the Education of Young Children, et al. Infants, Their Social Environments. National Association for the Education of Young Children, 1981.