M. Cervino, “Excursion a Torrijos, Maqueda, Escalona de Alberche y Almorox,” Boletin de la Sociedad Espanola de Excursiones, December, 1894, pp. 194-198 (illus.);
L. Reau, “Deux chefs d’oeuvre de la sculpture espagnol a Paris,” in Les Beaux Arts (Le Journal des Arts), March 27, 1942, p. 3 (illus.);
Magazine of Art, December, 1948, pp. 302-5 (illus.);
A. C. Ritchie, "Two Masterpieces of Spanish Sculpture" in Gallery Notes, Fall-Winter, 1948-1949, pp. 3-5 (illus.);
AQ, Autumn, 1949, p.275 (illus.);
B. G. Proske, Pompeo Leoni. Work in marble and alabaster in relation to Spanish sculpture, The Hispanic Society of America, New York, 1956, n. 33, p. 43;
S. A. Nash, Paintings and Sculpture. Antiquity to 1942, Albright-Knox Art Gallery, New York, 1979, p. 188;
Rosa Lopez Torrijos and Juan Nicolau Castro, 'La Familia Cardenas, Juan de Lugano Y Los Encargos de escultura Genovesa en el siglo XVI' in Bulletin of the Art and Archeology Studies Seminar, BSAA, vo. 68, 2002, pp. 169-190, fig. 5 (illus.)