Gaya APA

Triprihatmini, ., Setyandari, L. (2012). Let's Learn English : Elementary School IV (Cet. 1.--). Yogyakarta: Kanisius.

Gaya MLA

Triprihatmini, ., Setyandari, Lani. "Let's Learn English : Elementary School IV". Cet. 1.-- Yogyakarta: Kanisius, 2012. Text.