Ellenberger, W., Baum, H., & Dittrich, H. (1956). An atlas of animal anatomy for artists: By W. Ellenberger, H. Baum, and H. Dittrich (2., rev. and expanded ed.). Dover Publ..

Ellenberger, Wilhelm, Herrmann Baum, and H. Dittrich. An Atlas of Animal Anatomy for Artists: By W. Ellenberger, H. Baum, and H. Dittrich. 2., rev. and expanded ed. New York, NY: Dover Publ., 1956.

Ellenberger, Wilhelm, et al. An Atlas of Animal Anatomy for Artists: By W. Ellenberger, H. Baum, and H. Dittrich. 2., rev. and expanded ed. Dover Publ., 1956.