APA-referens (7:e uppl.)

Helms, C. A. (1995). Fundamentals of skeletal radiology (2nd ed.). Saunders.

Chicago-referens (17:e uppl.)

Helms, Clyde A. Fundamentals of Skeletal Radiology. 2nd ed. Philadelphia, PA: Saunders, 1995.

MLA-referens (9:e uppl.)

Helms, Clyde A. Fundamentals of Skeletal Radiology. 2nd ed. Saunders, 1995.