@book{191955,
	author = {American Petroleum Institute, API},
	title = {Manual of petroleum measurement standards. Chapter 8- Sampling},
	publisher = {American Petroleum Institute, API},
	year = {2006},
	address = {Washington},
	edition = {3rd ed.},
	note = {Equivalente a la norma:ASTM D4057 ; Tenemos esta norma en español}
}