Cita APA (7th ed.)
Jensen, C. H., & Helsel, J. D. (1997). Engineering drawing and design (5th ed.). Glencoe.
Cita Chicago (17th ed.)
Jensen, Cecil Howard, i Jay D. Helsel. Engineering Drawing and Design. 5th ed. New York: Glencoe, 1997.
Cita MLA (9th ed.)
Jensen, Cecil Howard, i Jay D. Helsel. Engineering Drawing and Design. 5th ed. Glencoe, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.