Cita APA (7th ed.)
Campbell, G. M., & Dugger, J. (2002). Business letters for busy people: Time saving, ready-to-use letters for any occasion. Career Press.
Cita Chicago (17th ed.)
Campbell, G. Michael, i Jim Dugger. Business Letters for Busy People: Time Saving, Ready-to-use Letters for Any Occasion. Franklin Lakes, NJ: Career Press, 2002.
Cita MLA (9th ed.)
Campbell, G. Michael, i Jim Dugger. Business Letters for Busy People: Time Saving, Ready-to-use Letters for Any Occasion. Career Press, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.