Luzadder, W. J., & Duff, J. M. (1989). Fundamentals of engineering drawing: With an introduction to interactive computer graphics for design and production (10th ed.). Englewood Cliffs, NJ.: Prentice-Hall International.
Παραπομπή Chicago StyleLuzadder, Warren J., and J. M. Duff. Fundamentals of Engineering Drawing: With an Introduction to Interactive Computer Graphics for Design and Production. 10th ed. Englewood Cliffs, NJ.: Prentice-Hall International, 1989.
Παραπομπή MLALuzadder, Warren J., and J. M. Duff. Fundamentals of Engineering Drawing: With an Introduction to Interactive Computer Graphics for Design and Production. 10th ed. Englewood Cliffs, NJ.: Prentice-Hall International, 1989.
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