@book{213040,
	author = {Cunningham, William G. and Cordeiro, Paula A.},
	title = {Educational leadership},
	publisher = {Pearson/Allyn and Bacon},
	year = {2009.},
	address = {Boston},
	edition = {4th ed.},
	note = {Prev. eds have subtitle: Aproblem-based approach.}
}