APA (7th ed.) Citation

Borgman, H. (1989). The illustrator's guide to pen and pencil drawing techniques. Watson-Guptill.

Chicago Style (17th ed.) Citation

Borgman, Harry. The Illustrator's Guide to Pen and Pencil Drawing Techniques. New York: Watson-Guptill, 1989.

MLA (9th ed.) Citation

Borgman, Harry. The Illustrator's Guide to Pen and Pencil Drawing Techniques. Watson-Guptill, 1989.