MacCord, C. W. (1892). Mechanical drawing: Progressive exercises and practical hints. J. Wiley & sons.
Chicago-referens (17:e uppl.)MacCord, Charles William. Mechanical Drawing: Progressive Exercises and Practical Hints. New York: J. Wiley & sons, 1892.
MLA-referens (8:e uppl.)MacCord, Charles William. Mechanical Drawing: Progressive Exercises and Practical Hints. J. Wiley & sons, 1892.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.