Polentz, L. M. Engineering fundamentals for professional engineers examinations (3a ed.).
Citazione stile Chigago Style (17a edizione)Polentz, Lloyd M. Engineering Fundamentals for Professional Engineers Examinations. 3a ed.
Citatione MLA (8a ed.)Polentz, Lloyd M. Engineering Fundamentals for Professional Engineers Examinations. 3a ed.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.