Gaya APA

David, E. (2011). Be Good, Bobos !: Jangan Nakal Bobos ! (cet. 1). JAKARTA: Erlangga For Kids.

Gaya MLA

David, Erica. "Be Good, Bobos !: Jangan Nakal Bobos !". cet. 1 JAKARTA: Erlangga For Kids, 2011. Text.