@book{28359,
	author = {Tilley, Scott.},
	title = {Systems analysis and design},
	publisher = {Cambridge University Press},
	year = {2016},
	address = {Boston},
	edition = {11th},
	url = {https://www.libgen.is/book/index.php?md5=28E4E376C76DAE6CAF8A3581E1527517}
}