Helfant, S. (1969). Training and motivating retail sales people. Independent Stores Division, National Retail Merchants Association.
Citace podle Chicago (17th ed.)Helfant, Seymour. Training and Motivating Retail Sales People. New York: Independent Stores Division, National Retail Merchants Association, 1969.
Citace podle MLA (8th ed.)Helfant, Seymour. Training and Motivating Retail Sales People. Independent Stores Division, National Retail Merchants Association, 1969.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..