APA aipamena

SAFIRE. (1990). LEADERSHIP. SIMON & SCHUSTER.

Chicago Style aipamena

SAFIRE. LEADERSHIP. NEW YORK: SIMON & SCHUSTER, 1990.

MLA aipamena

SAFIRE. LEADERSHIP. SIMON & SCHUSTER, 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.