@book{27168,
	author = {Pederson, Carlton A. and Wright, Milburn D.,},
	title = {Salesmanship: principles and methods /},
	publisher = {R. D. Irwin,},
	year = {1961.},
	address = {Homewood, Ill.,},
	edition = {3th ed.},
	note = {Beginning with 6th ed. (1976) published under title: Selling.}
}