APA aipamena

Richards, J., & Long, M. (1980). Breakthrough: A Course in English Communication Practice. Paris: Hermes*.

Chicago Style aipamena

Richards, J.c., và M.n Long. Breakthrough: A Course in English Communication Practice. Paris: Hermes*, 1980.

MLA aipamena

Richards, J.c., và M.n Long. Breakthrough: A Course in English Communication Practice. Paris: Hermes*, 1980.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.