@book{56940,
	author = {Da Vall, George M and Ernest, John W., 1914-},
	title = {Salesmanship fundamentals. (2nd ed.)},
	publisher = {Gregg Pub. Division, McGraw-Hill},
	year = {1981},
	address = {New York :},
	edition = {2nd ed.},
	note = {Fifth ed. published in 1980 under title: Selling.}
}