Cita APA (7a ed.)

Watson, E. W. (1937). Pencil Drawing: Demonstrating 12 Different Methods of Employing The Lead Pencil to Secure a Variety of Technics. Watson-Guptill Publ. Inc.

Cita Chicago Style (17a ed.)

Watson, Ernest W. Pencil Drawing: Demonstrating 12 Different Methods of Employing The Lead Pencil to Secure a Variety of Technics. New York: Watson-Guptill Publ. Inc, 1937.

Cita MLA (9a ed.)

Watson, Ernest W. Pencil Drawing: Demonstrating 12 Different Methods of Employing The Lead Pencil to Secure a Variety of Technics. Watson-Guptill Publ. Inc, 1937.