Foss, G. (1991). How to paint: A course in the art of oil painting. Watson-Guptill.
Lua i Stíl Chicago (17ú heag.)Foss, Gloria. How to Paint: A Course in the Art of Oil Painting. New York: Watson-Guptill, 1991.
Lua MLA (9ú heag.)Foss, Gloria. How to Paint: A Course in the Art of Oil Painting. Watson-Guptill, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.