@book{1238,
	author = {Freund, John E.},
	title = {Elementary business statistics : the modern approach / John E. Freund, Frank J. Williams, Benjamin M. Perles.},
	publisher = {Englewood Cliffs, N.J. : Prentice Hall, 1993.},
	address = {Englewood Cliffs, N.J. : Prentice Hall, 1993.},
	edition = {6th ed.}
}