McKay, M. (2009). Messages. AMACOM(American Management Association).
Chicago Style aipamenaMcKay, Matthew. Messages. New York: AMACOM(American Management Association), 2009.
MLA aipamenaMcKay, Matthew. Messages. AMACOM(American Management Association), 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.