McGraw-Hill & Constance, J. D. (1988). How to become a professional engineer: The road to registration (4th ed.). McGraw-Hill.
Παραπομπή σε μορφή Chicago (17η εκδ.)McGraw-Hill και John D. Constance. How to Become a Professional Engineer: The Road to Registration. 4th ed. New York: McGraw-Hill, 1988.
Παραπομπή σε μορφή MLA (8th εκδ.)McGraw-Hill και John D. Constance. How to Become a Professional Engineer: The Road to Registration. 4th ed. McGraw-Hill, 1988.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.