Earle, J. H. (1987). Engineering design graphics (5a. ed.). Adisson-Wesley.
Chicago Style (17th ed.) ZitazioaEarle, James H. Engineering Design Graphics. 5a. ed. Reading: Adisson-Wesley, 1987.
MLA (9th ed.) ZitazioaEarle, James H. Engineering Design Graphics. 5a. ed. Adisson-Wesley, 1987.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.