@book{6982,
	author = {Comer, Douglas E.},
	title = {Computer networks and internet},
	publisher = {Pearson Education Publisher},
	address = {New Dehli},
	edition = {4th},
	url = {https://libgen.is/book/index.php?md5=A4E6F03EA7F9561161EA309B665FFA35}
}