Cita APA (7th ed.)

Ralph, K. S., & Eddowes, E. A. (2002). Interactions for development and learning: Birth through eight years (2nd ed.). Merrill Prentice Hall.

Cita Chicago (17th ed.)

Ralph, Kathleen S., i E. Anne Eddowes. Interactions for Development and Learning: Birth Through Eight Years. 2nd ed. Upper Saddle River, N.J: Merrill Prentice Hall, 2002.

Cita MLA (9th ed.)

Ralph, Kathleen S., i E. Anne Eddowes. Interactions for Development and Learning: Birth Through Eight Years. 2nd ed. Merrill Prentice Hall, 2002.