@book{5509,
	author = {Bryman, Alan},
	title = {Social research methods},
	publisher = {Oxford University Press},
	year = {2012},
	address = {New York},
	edition = {4th},
	url = {https://libgen.is/book/index.php?md5=53C9CFDA1BBA3F7F3B24530B231B3F6E}
}