@book{341,
	author = {Porter, Michael E. and Porter, Michael E.},
	title = {Competitive Strategy :},
	publisher = {Free Press,},
	year = {1998.},
	address = {New York :},
	edition = {2nd ed.},
	note = {Includes index},
	url = {https://public.ebookcentral.proquest.com/choice/publicfullrecord.aspx?p=4934952}
}