Gaya APA

Hidayati, N, N. et al (2015). TOEFL: Self Preparation Course Smart Way To Reach The Highest Score . Yogyakarta: Pustaka Baru Press.

Gaya MLA

Hidayati, Niswatin, Nurul. et al. "TOEFL: Self Preparation Course Smart Way To Reach The Highest Score". Yogyakarta: Pustaka Baru Press, 2015. Text.