Gaya APA

Purba, A, Z, U. (2011). Hak Kekayaan Intelektual Pasca Trips (Ed.1, Cet.2). Bandung: PT Alumni.

Gaya MLA

Purba, Achmad, Zen, Umar. "Hak Kekayaan Intelektual Pasca Trips". Ed.1, Cet.2 Bandung: PT Alumni, 2011. Text.