Não informado. (1979). Darkroom photography. Photography Instructors Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Darkroom Photography. Beverly Hills, Calif: Photography Instructors Association, 1979.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Darkroom Photography. Photography Instructors Association, 1979.
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