APA Format
Liebert, Robert M.; Wicks-Nelson, Rita. (1981).
Developmental psychology / Robert M. Liebert, Rita Wicks-Nelson
. New York :: Prentice Hall,.
MLA Format
Liebert, Robert M.; Wicks-Nelson, Rita.
Developmental psychology / Robert M. Liebert, Rita Wicks-Nelson
. New York :: Prentice Hall,, 1981
Chicago Format
Liebert, Robert M.; Wicks-Nelson, Rita. Developmental psychology / Robert M. Liebert, Rita Wicks-Nelson. New York :: Prentice Hall,, 1981.