Henry Gray (18251861). Anatomy of the Human Body. 1918.
FIG. 1225
Front of abdomen, showing surface markings for duodenum, pancreas, and kidneys. A A. Plane through joint between body and xiphoid process of sternum. B B. Plane midway between A A and transpyloric plane. C C. Plane midway between transpyloric and transtubercular planes.