Gaya APA

Bois, W, P, D., Bakdisoemanto, N. (2010). The Twenty-One Balloons = 21 Balon Udara . Jakarta: PT Elex Media Komputindo.

Gaya MLA

Bois, Willian, Pene, Du., Bakdisoemanto, Nin. "The Twenty-One Balloons = 21 Balon Udara". Jakarta: PT Elex Media Komputindo, 2010. Text.