@book{7116,
	author = {Cooper, Donald R.},
	title = {Business rsearch methods},
	publisher = {McGraw Hill},
	year = {2001},
	address = {Boston},
	edition = {7th},
	url = {https://libgen.is/book/index.php?md5=B4B62391D837103F4273300779CA62B5}
}