APA aipamena

Hadfield, J., & Hadfield, C. (1999). Presenting new language. Oxford: Oxford University Press.

Chicago Style aipamena

Hadfield, Jill, và Charles Hadfield. Presenting New Language. Oxford: Oxford University Press, 1999.

MLA aipamena

Hadfield, Jill, và Charles Hadfield. Presenting New Language. Oxford: Oxford University Press, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.