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.
Psikologi.