@book{63341,
	author = {Gelfand, Harold and Walker, Charles J. and American Psychological Association},
	title = {Manual de estilo de publicaciones de la American Psychological Association  guía de entrenamiento para el estudiante},
	publisher = {Manual Moderno},
	year = {2006},
	address = {México D.F. (México)},
	edition = {2a. ed.}
}