@book{60770,
	author = {Bent, Rudyard K., and Kronenberg, Henry Harold,},
	title = {Principles of secondary education /},
	publisher = {McGraw-Hill,},
	year = {c1955},
	series = {McGroaw-Hill Series in Education},
	address = {New York :},
	edition = {3d ed},
	note = {Includes index}
}