@book{2925,
	author = {Bolton, William.},
	title = {Programmable Logic Controllers.},
	publisher = {Elsevier Science & Technology,},
	year = {2015.},
	address = {Chantilly :},
	edition = {6th ed.},
	url = {https://ebookcentral.proquest.com/lib/ppks/detail.action?docID=1985959}
}