Gaya APA
Piaget, J., Inhelder, B.
(2010).
Psikologi Anak : The Psychology of the Child
.
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Piaget, Jean., Inhelder, Barbel.
"Psikologi Anak : The Psychology of the Child".
Yogyakarta:
Pustaka Pelajar,
2010.
Text.