Não informado. (1979). Darkroom photography. Photography Instructors Association.
Chicago-referens (17:e uppl.)Não informado. Darkroom Photography. Beverly Hills, Calif: Photography Instructors Association, 1979.
MLA-referens (8:e uppl.)Não informado. Darkroom Photography. Photography Instructors Association, 1979.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.