G. Grappe, Catalogue du Musée Rodin, Paris, 1927, nos. 69-70, p. 42 (other versions illustrated).G. Grappe, Catalogue du Musée Rodin, Paris, 1944, no. 56, p. 141 (large marble version illustrated p. 56).B. Champigneulle, Rodin, London, 1967, nos. 34-35, p. 280 (large versions illustrated pp. 92-93).R. Descharnes & J.F. Chabrun, Auguste Rodin, Lausanne, 1967, p. 135 (large bronze version illustrated pp. 56-57).I. Jianou & C. Goldscheider, Rodin, Paris, 1967, p. 96 (another cast illustrated pp. 56-57).J.L. Tancock, The Sculpture of Auguste Rodin, Philadelphia, 1976, no. 32b, pp. 241-245 (another cast illustrated p. 243).A.E. Elsen, Rodin Rediscovered, Washington, 1981, p. 68 (large clay version illustrated, fig. 313).A. Le Normand-Romain, The Bronzes of Rodin: Catalogue of Works in the Musée Rodin, Paris, 2007, vol. I, no. S. 2808, p. 33 (another cast illustrated).