C. Mauclair, Auguste Rodin : The Man, His Ideas, His Works , London, 1905, p. 12 (marble version illustrated).
J. Cladel, Auguste Rodin, L"œuvre et l"homme , Brussels, 1908, p. 159 (another version referenced; other versions illustrated pls. 6 & 32).
L. Bénédite, Rodin , London, 1924, pp. 26-27 (another version illustrated pl. XVI).
L. Bénédite, Rodin , London, 1926, pl. 9 (marble version illustrated).
G. Grappe, Catalogue du Musée Rodin , vol. I, Paris, 1927, no. 39, pp. 35-36 (marble version illustrated p. 35).
J. Cladel, Rodin, sa vie glorieuse, sa vie inconnue , Paris, 1936, pp. 142-143.
G. Grappe, Le Musée Rodin , Paris, 1944, no. 44, p. 141 (another cast illustrated pl. 44).
I. Jianou & C. Goldscheider, Rodin , Paris, 1967, pp. 88-89 (plaster version illustrated pl. 17).
R. Descharnes & J.-F. Chabrun, Auguste Rodin , Lausanne, 1967, p. 98 (another cast illustrated p. 99).
J.L. Tancock, The Sculpture of Auguste Rodin: The Collection of the Rodin Museum, Philadelphia , Philadelphia, 1976, no. 8-5, p. 155 (another cast illustrated p. 154).
J. de Caso & P.B. Sanders, Rodin"s Sculpture: A Critical Study of the Spreckels Collection , Rutland, 1977, no. 21, pp. 143-147 (plaster version illustrated pp. 142 &145).
M. Hanotelle, Paris/Bruxelles: Rodin et Meunier, Relations des sculpteurs français et belges à la fin du XIXe siècle , Paris, 1982, p. 59 (another version illustrated p. 57).
A. Beausire, Quand Rodin exposait , Paris, 1988, pp. 82-85 (terracotta version illustrated p. 84).
D. Finn & M. Busco, Rodin and His Contemporaries: The Iris & B. Gerald Cantor Collection , New York, 1991, p. 42 (other versions illustrated pp. 43-47).
R. Butler, Rodin: The Shape of Genius , New Haven & London, 1993, fig. 66, p. 161 (plaster version illustrated).
A. Le Normand-Romain, The Bronzes of Rodin: Catalogue of Works in the Musée Rodin , vol. I, Paris, 2007, no. S.756, p. 341 (another cast illustrated fig. 7, p. 346).