Gaya APA

Alexander, L, G. (1978). Practice and Progress: Recorded Drills - Tapescript (Cet. 1.--). Yogyakarta: Kanisius.

Gaya MLA

Alexander, L., G.. "Practice and Progress: Recorded Drills - Tapescript". Cet. 1.-- Yogyakarta: Kanisius, 1978. Text.