Frank, E. D., Ballinger, P. W., Smith, B. J., Andolina, V. F., Aziza, A., & Merrill, V. 1. (2007). Merrill's atlas of radiographic positioning & procedures (Eleventh edition.). St. Louis, Missouri: Mosby-Elsevier.

Frank, Eugene D., Philip W. Ballinger, Barbara J. Smith, Valerie Fink Andolina, Albert Aziza, and Vinita 1905-1977 Merrill. Merrill's Atlas of Radiographic Positioning & Procedures. Eleventh edition. St. Louis, Missouri: Mosby-Elsevier, 2007.

Frank, Eugene D., et al. Merrill's Atlas of Radiographic Positioning & Procedures. Eleventh edition. St. Louis, Missouri: Mosby-Elsevier, 2007.