@book{6783,
	author = {Beer, Ferdinand. and Johnston, Jr., E. Russell.},
	title = {Vector mechanics for engineers :},
	publisher = {McGraw-Hill Science/Engineering/Math,},
	year = {2009.},
	address = {New Delhi},
	edition = {9th ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/007727556X/chopaconline-20}
}