Jensen, C. H., & Helsel, J. D. (1979). Engineering drawing and design (2d ed.). Gregg Division, McGraw-Hill.
Stile di citazione ChicagoJensen, Cecil Howard, e Jay D. Helsel. Engineering Drawing and Design. 2d ed. New York: Gregg Division, McGraw-Hill, 1979.
Citazione MLAJensen, Cecil Howard, e Jay D. Helsel. Engineering Drawing and Design. 2d ed. Gregg Division, McGraw-Hill, 1979.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.