@book{135791,
	author = {Marks, John L. and Hiatt, Arthur A.},
	title = {Teaching elementary school mathematics for understanding.},
	publisher = {McGraw-Hill},
	year = {c1985.},
	address = {New York},
	edition = {5th ed.},
	note = {Rev. ed. of: Teaching elementary school mathematics for understanding / John L. Marks [et al.]. 4th ed. 1975.}
}