C. Mauclair, Auguste Rodin, The Man, His Ideas, His Works, London, 1905, pp. 13-14 (another cast illustrated, p. 12). J. Cladel, Auguste Rodin, l'oeuvre et l'homme, Brussels, 1908, p. 161 (marble version illustrated, pl. 32). J. Cladel, Rodin, sa vie glorieuse et inconnue, Paris, 1936, pp. 142-143. G. Grappe, Catalogue du Musée Rodin, Paris, 1947, p. 141, no. 44 (another version illustrated). A.E. Elsen, Rodin, New York, 1963, pp. 49, 151, 192 and 208 (larger version illustrated, p. 51). R. Descharnes and J.-F. Chabrun, Auguste Rodin, Paris, 1967, p. 160. I. Jianou and C. Goldschieder, Rodin, Paris, 1967, pp. 88-89 (plaster version illustrated, pl. 17). N. Barbier, Marbres de Rodin, Paris, 1987, p. 190, no. 85 (larger marble version illustrated, p. 199). 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. 187-191, no. 41 (another cast and plaster version illustrated, pp. 187-189). A. Le Normand-Romain, The Bronzes of Rodin, Catalogue of Works in the Musée Rodin, Paris, 2007, vol. I, pp. 340-343, no. S. 756 (another cast illustrated, pp. 340-341).