Attridge, G. G. (1980). The determination of photon sensitivities of photographic emulsion crystals. British Library Document Supply Centre.
Lua i Stíl Chicago (17ú heag.)Attridge, Geoffrey Giles. The Determination of Photon Sensitivities of Photographic Emulsion Crystals. Boston Spa, United Kindom: British Library Document Supply Centre, 1980.
Lua MLA (8ú heag.)Attridge, Geoffrey Giles. The Determination of Photon Sensitivities of Photographic Emulsion Crystals. British Library Document Supply Centre, 1980.
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