Gaya APA
Papalia, D, E., Olds, S, W. (1986).
Human Development .
United States of America:
McGraw-Hil Book Company.
Gaya MLA
Papalia, Diane, E.., Olds, Sally, Wendkos.
"Human Development".
United States of America:
McGraw-Hil Book Company,
1986.
Text.