@book{56998,
	author = {American Petroleum Institute, API},
	title = {Recommended practice for design, installation, and maintenance of electrical systems for fixed and floating offshore petroleum facilities for unclassified and class I, Division 1 and Division 2 locations :},
	publisher = {American Petroleum Institute, API,},
	year = {2018.},
	address = {Washington :},
	edition = {6a. ed.}
}