Lovell, R. P., Folts, J. A., & Zwahlen, F. C. (1996). Two centuries of shadow catchers: A compact history of photography. Delmar Publishers.
Lua i Stíl Chicago (17ú heag.)Lovell, Ronald P., James A. Folts, agus Fred C. Zwahlen. Two Centuries of Shadow Catchers: A Compact History of Photography. Albany, NY: Delmar Publishers, 1996.
Lua MLA (9ú heag.)Lovell, Ronald P., et al. Two Centuries of Shadow Catchers: A Compact History of Photography. Delmar Publishers, 1996.
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