Cita APA (7a ed.)

Watson, E. W. (1937). Pencil drawing: Demostrating 12 different methods of employing the lead pencil to secure a variety of technics. Watson Guptill.

Cita Chicago Style (17a ed.)

Watson, Ernest W. Pencil Drawing: Demostrating 12 Different Methods of Employing the Lead Pencil to Secure a Variety of Technics. New York: Watson Guptill, 1937.

Cita MLA (9a ed.)

Watson, Ernest W. Pencil Drawing: Demostrating 12 Different Methods of Employing the Lead Pencil to Secure a Variety of Technics. Watson Guptill, 1937.