Não informado. (1979). Darkroom photography. Photography Instructors Association.
Chicago-viite (17. p.)Não informado. Darkroom Photography. Beverly Hills, Calif: Photography Instructors Association, 1979.
MLA-viite (8. p.)Não informado. Darkroom Photography. Photography Instructors Association, 1979.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.