Foss, G. (1991). How to paint: A course in the art of oil painting. Watson-Guptill.
Chicago-referens (17:e uppl.)Foss, Gloria. How to Paint: A Course in the Art of Oil Painting. New York: Watson-Guptill, 1991.
MLA-referens (9:e uppl.)Foss, Gloria. How to Paint: A Course in the Art of Oil Painting. Watson-Guptill, 1991.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.