Zipprich, A. E. (1954). Freehand drafting: A text and problem book of engineering sketching (3rd ed.). D. Van Nostrand company, inc..
Chicago Style (17th ed.) CitationZipprich, Anthony E. Freehand Drafting: A Text and Problem Book of Engineering Sketching. 3rd ed. New York: D. Van Nostrand company, inc., 1954.
MLA (9th ed.) CitationZipprich, Anthony E. Freehand Drafting: A Text and Problem Book of Engineering Sketching. 3rd ed. D. Van Nostrand company, inc., 1954.
Warning: These citations may not always be 100% accurate.