APA aipamena

Central Institute of English & Foreign Languages . NULL. (1976). Exercises in spoken english.

Chicago Style aipamena

Central Institute of English & Foreign Languages . NULL. Exercises in Spoken English. NULL:, 1976.

MLA aipamena

Central Institute of English & Foreign Languages . NULL. Exercises in Spoken English. 1976.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.