Gaya APA

Piaget, J. et al. (2010). Psikologi anak = The pcychology of the child . Yogyakarta: Pustaka Pelajar.

Gaya MLA

Piaget, J. et al.. Psikologi anak = The pcychology of the child. Yogyakarta: Pustaka Pelajar, 2010. Text.