Cita APA

Douglas, R. (1967). Calligraphic lettering with wide pen & brush ([3rd ed.].). Watson-Guptill.

Citación estilo Chicago

Douglas, Ralph. Calligraphic Lettering with Wide Pen & Brush. [3rd ed.]. New York: Watson-Guptill, 1967.

Cita MLA

Douglas, Ralph. Calligraphic Lettering with Wide Pen & Brush. [3rd ed.]. Watson-Guptill, 1967.