Gaya APA

Alexander, L, G. (1983). Practice and Progress: An Integrated Course for Pre-Intermediate Students (cet. 1). Yogyakarta: Yayasan Kanisius.

Gaya MLA

Alexander, L., G.. "Practice and Progress: An Integrated Course for Pre-Intermediate Students". cet. 1 Yogyakarta: Yayasan Kanisius, 1983. Text.