APA Style

Maimon, E. et al (2012). Relation between participating in playgroup with child development . Yogyakarta: FK Universitas Gajah Mada Yogyakarta.

MLA Style

Maimon, Elsa. et al. "Relation between participating in playgroup with child development". Yogyakarta: FK Universitas Gajah Mada Yogyakarta, 2012. Text.