@book{54413,
	author = {Gutiérrez Sáenz, Raúl},
	title = {Introducción a la filosofía},
	publisher = { : Esfinge},
	year = {, 2001},
	address = {México},
	edition = {10a. edición},
	note = {Reimpresiones: 1983, 1988, 1991, 2001}
}