Koenig, P. A. (2000). Design graphics: Drawing techniques for design professionals. Prentice Hall.
Chicago Style aipamenaKoenig, Peter A. Design Graphics: Drawing Techniques for Design Professionals. Upper Saddle River, N.J: Prentice Hall, 2000.
MLA aipamenaKoenig, Peter A. Design Graphics: Drawing Techniques for Design Professionals. Prentice Hall, 2000.
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