@book{6521,
	author = {Petersen, Evelyn A. and Petersen, Evelyn A.},
	title = {A practical guide to early childhood curriculum :},
	publisher = {Allyn and Bacon,},
	year = {2003.},
	address = {Boston :},
	edition = {2nd ed.},
	note = {Rev. ed. of: A practical guide to early childhood planning, methods, and materials. c1996.}
}