Penggayaan APA

Allsop. (1989). Penguin english test book 1 . [s.l]: Gelatik.

Chicago Style

Allsop. Penguin english test book 1. [s.l]: Gelatik, 1989. Text.

MLA Style

Allsop. Penguin english test book 1. [s.l]: Gelatik, 1989. Text.

Turabian Style

Allsop. Penguin english test book 1. [s.l]: Gelatik, 1989. Print.