L. Maillard, Auguste Rodin, Statuaire, Paris, 1899, pp. 121-122 (the marble version illustrated fig. 16). G. Grappe, Catalogue du Musée Rodin, Paris, 1927, nos. 69-70, p. 42 (other versions illustrated). Musée Rodin, ed., Catalogue 1931, Paris, 1931, no. 135, p. 68 (larger version illustrated). J. Cladel, Rodin, London, 1936 (the marble version illustrated p. 97). G. Grappe, Le Musée Rodin, Paris, 1947, p. 141 (larger version illustrated pl. 56). B. Champigneulle, Rodin, London, 1967, nos. 34-35, p. 280 (larger plaster versions illustrated pp. 92-93). R. Descharnes & J. F. Chabrun, Auguste Rodin, Paris, 1967, p. 135 (larger bronze version illustrated p. 134). I. Jianou and C. Goldscheider, Rodin , Paris, 1967, p. 96, pls. 56-57 (large bronze version illustrated). L. Steinberg, Other criteria, Confrontations with Twentieth-Century Art, Oxford, 1972, no. 232, p. 363 (the marble version illustrated). J. L. Tancock, The Sculpture of Auguste Rodin , Philadelphia, 1976, no. 32b, p. 246 (larger bronze version illustrated). A. E. Elsen, Rodin Rediscovered , Washington, 1981, p. 68 (large clay version illustrated fig. 313). A.-B. Fonsmark, Rodin, New York, 1988, no. 15, pp. 100-102 (the marble version illustrated p. 101). A. E. Elsen, Rodin's Art, The Rodin Collection of the Iris & B. Gerald Cantor Center for Visual Arts at Stanford University , New York, 2003, pp. 494-497, no. 148 (other versions illustrated pp. 494-496). A. Le Normand-Romain, Rodin et le bronze, Catalogue des œuvres conservées au Musée Rodin , vol. I, Paris, 2007, no. S. 777, p. 334 (another cast illustrated)