Gaya APA
Piaget, J., Inhelder, B. (2018).
Psikologi anak : The psychology of the child (Cet. 3).
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Piaget, Jean., Inhelder, Barbel.
"Psikologi anak : The psychology of the child".
Cet. 3
Yogyakarta:
Pustaka Pelajar,
2018.
Book.