Gill, R. W. (2007). Rendering with pen and ink (Rev. ed.). Thames and Hudson.
Citación estilo ChicagoGill, Robert W. Rendering with Pen and Ink. Rev. ed. New York: Thames and Hudson, 2007.
Cita MLAGill, Robert W. Rendering with Pen and Ink. Rev. ed. Thames and Hudson, 2007.
Warning: These citations may not always be 100% accurate.