Willoughby, G. A. (1957). General drawing handbook. C.A. Bennett Co.
Chicago Style (17th ed.) CitationWilloughby, George Alonzo. General Drawing Handbook. Peoria, Ill.: C.A. Bennett Co, 1957.
MLA (8th ed.) CitationWilloughby, George Alonzo. General Drawing Handbook. C.A. Bennett Co, 1957.
Warning: These citations may not always be 100% accurate.