@book{6116,
	author = { Gustafson, David A.},
	title = {Schaum's outline of Theory and Problems of Software Engineering},
	publisher = {McGraw Hill Professional,},
	year = { 2011},
	address = {New York :},
	url = {https://books.google.com.pk/books/about/Schaum_s_Outline_of_Software_Engineering.html?id=yc211ABSMKcC&source=kp_book_description&redir_esc=y}
}