American Management Association. (1996). The AMA style guide for business writing. AMACOM.
Chicago Style aipamenaAmerican Management Association. The AMA Style Guide for Business Writing. New York: AMACOM, 1996.
MLA aipamenaAmerican Management Association. The AMA Style Guide for Business Writing. AMACOM, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.