Gaya APA
Piaget, J., Inhelder, B. (2016).
Psikologi anak : the psychology of the child (Cet. 2).
Yogyakarta:
Pustaka Pelajar.
Gaya MLA
Piaget, Jean., Inhelder, Barbel.
"Psikologi anak : the psychology of the child".
Cet. 2
Yogyakarta:
Pustaka Pelajar,
2016.
BUKU TEKS.