MACKENZIE, A. (1989). Time For success: Agoal getter'strategy. Mc Graw Hill inc.
Chicago Style aipamenaMACKENZIE, Alec. Time For Success: Agoal Getter'strategy. New York: Mc Graw Hill inc, 1989.
MLA aipamenaMACKENZIE, Alec. Time For Success: Agoal Getter'strategy. Mc Graw Hill inc, 1989.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.