Guptill, A. L., & Booth, F. (1949). Drawing with pen and ink: And a word concerning the brush. New York: Reinhold Pub. Corp.
Παραπομπή Chicago StyleGuptill, Arthur Leighton, and Franklin Booth. Drawing With Pen and Ink: And a Word Concerning the Brush. New York: Reinhold Pub. Corp, 1949.
Παραπομπή MLAGuptill, Arthur Leighton, and Franklin Booth. Drawing With Pen and Ink: And a Word Concerning the Brush. New York: Reinhold Pub. Corp, 1949.
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