@book{6482,
	author = {Barney, Jay B.},
	title = {Gaining And Sustaining Competitive Advantage.},
	publisher = {Pearson,},
	year = {2015.},
	address = {Chennai :},
	edition = {4th ed.},
	url = {https://www.amazon.co.uk/dp/B00IZ0AZZW/ref=dp_kinw_strp_1}
}