Citazione Stile APA (7a Edizione)

DWIJATMOKO, B. (1990). Communicative grammar practice (for first year english department university students). Kanisius.

Citazione stile Chigago Style (17a edizione)

DWIJATMOKO, B.B. Communicative Grammar Practice (for First Year English Department University Students). Yogyakarta: Kanisius, 1990.

Citatione MLA (9a ed.)

DWIJATMOKO, B.B. Communicative Grammar Practice (for First Year English Department University Students). Kanisius, 1990.