Gaya APA

Khadijah, ., Armanila, . (2017). Permasalahan anak usia dini (Cet.2). Medan: Perdana Publishing.

Gaya MLA

Khadijah, ., Armanila, . "Permasalahan anak usia dini". Cet.2 Medan: Perdana Publishing, 2017. Text.