@book{86418,
	author = {Madsen,David A.et al and Madsen, David P.,},
	title = {Engineering drawing & design/},
	publisher = {Cengage learning;},
	year = {2017.},
	address = {U.S.A:},
	edition = {Sixth Edition /},
	note = {"ADDA Approved publication : a legacy of excellence."}
}