Gaya APA

Alexander, L. (2005). Practice and Progress, an Integrated Course for Pre Intermediate Students (New Concept English) . Yogyakarta: Kanisius.

Gaya MLA

Alexander, L.G. "Practice and Progress, an Integrated Course for Pre Intermediate Students (New Concept English)". Yogyakarta: Kanisius, 2005. Pendidikan.