@book{141448,
	author = {American Petroleum Institute, API},
	title = {Specification for valves},
	publisher = {American Petroleum Institute, API},
	year = {2021},
	address = {Washington},
	edition = {25th. ed.},
	note = {Incluye ademas: Errata 1, diciembre 2021 Errata 2, abril 2022 Adenda 1, abril 2023}
}