@book{62130,
	author = {Ramakrishnan, Raghu and Gehrke, Johannes },
	title = {Sistemas de Gestión de Bases de datos},
	publisher = {: McGraw-Hill},
	year = {, 2007},
	address = {España},
	edition = {3a. edición },
	note = {Título original: Database management systems}
}