Gaya APA

NH, S, R, W, L, N, &, E. (2008). Developing grammar skills for the toeic test . Yogyakarta: Pustaka Pelajar.

Gaya MLA

NH, Slamet, Riyanto, With, Leila, NH, &, Emilia. "Developing grammar skills for the toeic test". Yogyakarta: Pustaka Pelajar, 2008. Text.