@book{98296,
	author = {Glenn, William H. and Johnson, Donovan A.},
	title = {Invitation to mathematics},
	publisher = {Doubleday},
	year = {1962 [c1961]},
	address = {Garden City, N.Y.},
	note = {Previously published as 6 separate pamphlets in the series Exploring mathematics on your own.}
}