Citazione Stile APA (7a Edizione)
Jensen, C. H., & Helsel, J. D. (1997). Drawing workbook for fundamentals of engineering drawing (4th ed.). Glencoe, McGraw-Hill.
Citazione stile Chigago Style (17a edizione)
Jensen, Cecil Howard, e Jay D. Helsel. Drawing Workbook for Fundamentals of Engineering Drawing. 4th ed. New York: Glencoe, McGraw-Hill, 1997.
Citatione MLA (9a ed.)
Jensen, Cecil Howard, e Jay D. Helsel. Drawing Workbook for Fundamentals of Engineering Drawing. 4th ed. Glencoe, McGraw-Hill, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.