@book{25979,
	author = {Shelly, Gary B.},
	title = {Discovering computers},
	publisher = {COURSE TECHNOLOGY CENGAGE Learning},
	year = {2012},
	address = {Australia},
	url = {https://libgen.st/book/index.php?md5=9C6956AFDB722CF5EC787468F204EC9F}
}