Abbott, W. (1956). Practical geometry and engineering graphics: A textbook for engineering and other students (6th ed.). Blackie.
Citazione stile Chigago Style (17a edizione)Abbott, W. Practical Geometry and Engineering Graphics: A Textbook for Engineering and Other Students. 6th ed. London: Blackie, 1956.
Citatione MLA (8a ed.)Abbott, W. Practical Geometry and Engineering Graphics: A Textbook for Engineering and Other Students. 6th ed. Blackie, 1956.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.