Boeuf, M. L. (1995). Essence of time management. Jaico.
Chicago Style aipamenaBoeuf, Michael Le. Essence of Time Management. Bombay: Jaico, 1995.
MLA aipamenaBoeuf, Michael Le. Essence of Time Management. Jaico, 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.