Gaya APA

Papalia, D, E., Olds, S, W. (1990). A Child's world : infancy through adolescence (5th ed). New York: McGraw-Hill.

Gaya MLA

Papalia, Diane, E.., Olds, Sally, Wendkos. "A Child's world : infancy through adolescence". 5th ed New York: McGraw-Hill, 1990. Text.