APA Style

Mariani, L., Widarso, W. (2011). Complete english grammar / Wishnubroto Widarso & Lulut Mariana (Cet.13). Yogyakarta: Kanisius.

MLA Style

Mariani, Lulut., Widarso, Wishnubroto. "Complete english grammar / Wishnubroto Widarso & Lulut Mariana". Cet.13 Yogyakarta: Kanisius, 2011. Text.