APA aipamena

Phillips, D. T. (1992). Lincoln on leadership. New York: Warner Books.

Chicago Style aipamena

Phillips, Donald T. Lincoln On Leadership. New York: Warner Books, 1992.

MLA aipamena

Phillips, Donald T. Lincoln On Leadership. New York: Warner Books, 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.