Gaya APA

Riyanto, S. et al (2008). Developing listening skills for the toeic test (Cet. 1). Yogyakarta: Pustaka Pelajar.

Gaya MLA

Riyanto, Slamet. et al. "Developing listening skills for the toeic test". Cet. 1 Yogyakarta: Pustaka Pelajar, 2008. Text.