APA aipamena

Gillen, T. (1997). Positive influencing skills. Jaico.

Chicago Style aipamena

Gillen, Terry. Positive Influencing Skills. Bombay: Jaico, 1997.

MLA aipamena

Gillen, Terry. Positive Influencing Skills. Jaico, 1997.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.