Elsen, Albert Edward; Jamison, Rosalyn Frankel (2003). Bernard Barryte, ed. Rodin's Art: the Iris & B. Gerald Center Collection at Stanford University. New York, EUA: Oxford University Press. pp. 193-199. ISBN0195133811. «(...) that of The Shade is far more extreme, and it is as if Rodin added at least two inches to the trapezius muscle in the neck. The position of the head is so low as to endanger the brachial plexus (in the collarbone area) which affects the motor and sensory functions of the body.»
«Rodin Works: The Three Shades». Rodin-Web - The Independent Academic Rodin Platform(en inglés). septiembre de 2004. Consultado el 10 de junio de 2016.
