APA Style

Ritchie, A. et al (2008). Waktunya Tidur, Domba Nakal!: It's Time to Sleep, You Crazy Sheep! . Jakarta: Erlangga for Kids (a Division for Penerbit Erlangga).

MLA Style

Ritchie, Alison. et al. "Waktunya Tidur, Domba Nakal!: It's Time to Sleep, You Crazy Sheep!". Jakarta: Erlangga for Kids (a Division for Penerbit Erlangga), 2008. Text.