APA aipamena

Richards, J. C. (2004). Connect 4: Student's book. Cambridge: Cambridge University Press.

Chicago Style aipamena

Richards, Jack C. Connect 4: Student's Book. Cambridge: Cambridge University Press, 2004.

MLA aipamena

Richards, Jack C. Connect 4: Student's Book. Cambridge: Cambridge University Press, 2004.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.