@book{51492,
	author = {Mardones de Martinez, Leonor, and Pan American Union.},
	title = {Supervisión en servício social.},
	publisher = {Unión Panamericana,},
	year = {1962.},
	series = {Estudios y monografias,},
	address = {Washington,},
	note = {Previous ed. issued in 1958 by the Pan American Union, Section of Social Work.}
}