Gaya APA

Kusuma, A., Duwi, . (2015). Practice test TOEFL 8 full length simulated: audio, script, kunci & pembahasan lengkap (Cet.1). Solo: Genta Smart Publisher.

Gaya MLA

Kusuma, Alvina., Duwi, . "Practice test TOEFL 8 full length simulated: audio, script, kunci & pembahasan lengkap". Cet.1 Solo: Genta Smart Publisher, 2015. Textbook.