Graphic Artists Guild (United States). Graphic Artists Guild's directory of illustration. Madison Square.
Citazione stile Chigago Style (17a edizione)Graphic Artists Guild (United States). Graphic Artists Guild's Directory of Illustration. New York: Madison Square.
Citatione MLA (9a ed.)Graphic Artists Guild (United States). Graphic Artists Guild's Directory of Illustration. Madison Square.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.