APA Style

Amos, J., Spenceley, A. (2000). Problem Solvers: Mengapa Mengolok-Olok Teman . Indonesia: Kanisius.

MLA Style

Amos, Janine., Spenceley, Annabel. "Problem Solvers: Mengapa Mengolok-Olok Teman". Indonesia: Kanisius, 2000. Printed Book.