APA aipamena

Ury, W. L. (2000). The Third Side. Penguin Books.

Chicago Style aipamena

Ury, William L. The Third Side. Penguin Books, 2000.

MLA aipamena

Ury, William L. The Third Side. Penguin Books, 2000.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.