@book{1146,
	author = {Bolton, William},
	title = {Programmable logic controllers},
	publisher = {Elsevier,},
	year = {2015},
	address = {Amsterdam, Países Bajos :},
	edition = {Sixth edition},
	url = {https://itmsp.museknowledge.com/UOH?qurl=https://libros-uoh.uoh.cl/ESCUELADEINGENIERIA/INGENIERIACIVILELECTRICA/Programmable-logic-controllers}
}