G. Grappe, Catalogue du Musée Rodin, Paris, 1944, no. 166, no. 71, p. 142 (marble version illustrated pl. 71).
H. Martinie, Auguste Rodin, 1840-1917, Paris, 1949, no. 30 (marble version illustrated).
C. Goldscheider, Rodin: Sa vie, son oeuvre, son héritage, Paris, 1962, p. 49 (marble version illustrated in situ at Rodin's studio).
A.E. Elsen, Rodin, New York, 1963, p. 62 (another version illustrated p. 63).
B. Champigneulle, Rodin, London, 1967, nos. 78-79, pp. 162-163 & 282 (marble version illustrated).
R. Descharnes & J.F. Chabrun, Auguste Rodin, Lausanne, 1967, p. 130 (marble version illustrated p. 131).
I. Jianou & C. Goldscheider, Rodin, Paris, 1967, p. 100 (marble version illustrated pls. 54-55).
L. Goldscheider, Rodin Sculptures: A Critical Study of the Spreckels Collection, London, 1970, pl. 49 (marble version illustrated).
J.L. Tancock, The Sculpture of Auguste Rodin, Philadelphia, 1976, pp. 72, 90 & 108 (marble version illustrated in situ at the Salon of 1908 p. 77).
J. de Caso & P.B. Sanders, Rodin's Sculpture, San Francisco, 1977, pp. 149-152 (another version illustrated).
H. Pinet, Rodin: Sculpteur et les photographes de son temps, Paris, 1985.
N. Barbier, Marbres de Rodin: Collection du Musée, Paris, 1987, no. 79, p. 184 (marble version illustrated p. 185).
F.V. Grunfeld, Rodin, A Biography, New York, 1987, pp. 187-190, 221-222, 260, 262, 275-276, 281-282, 342, 373-374, 400, 457 & 577.
D. Finn & M. Busco, Rodin and His Contemporaries: The Iris and B. Gerald Cantor Collection, New York, 1991, p. 60 (another version illustrated).
R. Masson & V. Mattiussi, Rodin, Paris, 2004, p. 40 (marble version illustrated p. 41; terracotta version illustrated p. 42).
A. Le Normand-Romain, The Bronzes of Rodin: Catalogue of the Works in the Musée Rodin, vol. I, Paris, 2007, no. S.472, pp. 159-163 (another cast illustrated pp. 158-159).