Sobieszek, R. A. (1999). Gymnastics of the Soul: The clinical aesthetics of Duchenne de Boulogne. Ghost in the Shell : Photography and the Human Soul ; 1850-2000 ; Essays on Camera Portraiture.
Lua i Stíl Chicago (17ú heag.)Sobieszek, Robert A. "Gymnastics of the Soul: The Clinical Aesthetics of Duchenne De Boulogne." Ghost in the Shell : Photography and the Human Soul ; 1850-2000 ; Essays on Camera Portraiture 1999.
Lua MLA (8ú heag.)Sobieszek, Robert A. "Gymnastics of the Soul: The Clinical Aesthetics of Duchenne De Boulogne." Ghost in the Shell : Photography and the Human Soul ; 1850-2000 ; Essays on Camera Portraiture, 1999.
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