Gill, R. W. (1973). The Thames and Hudson : manual of rendering with: Pen and ink. Thames and Hudson.
Citazione stile Chigago Style (17a edizione)Gill, Robert W. The Thames and Hudson : Manual of Rendering with: Pen and Ink. London: Thames and Hudson, 1973.
Citatione MLA (9a ed.)Gill, Robert W. The Thames and Hudson : Manual of Rendering with: Pen and Ink. Thames and Hudson, 1973.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.