APA aipamena

Robinson, C. (1981). Themes for proficiency with key. Oxford: Oxford University.

Chicago Style aipamena

Robinson, Carole. Themes for Proficiency With Key. Oxford: Oxford University, 1981.

MLA aipamena

Robinson, Carole. Themes for Proficiency With Key. Oxford: Oxford University, 1981.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.