@book{3034,
	author = {Wooldridge, Jeffrey M.},
	title = {Introductory Econometrics :},
	publisher = {Cengage,},
	year = {2019.},
	address = {Mason, OH :},
	edition = {7th ed.},
	url = {https://ebookcentral.proquest.com/lib/ppks/detail.action?docID=6351340}
}