Baier, M. (1984). Instructor's manual to accompany elements of direct marketing. New York: McGraw-Hill.
Чикагска система за цитиранеBaier, Martin. Instructor's Manual to Accompany Elements of Direct Marketing. New York: McGraw-Hill, 1984.
MLA формат за цитиранеBaier, Martin. Instructor's Manual to Accompany Elements of Direct Marketing. New York: McGraw-Hill, 1984.
Внимание: Тези цитати може да не са 100% точни.