Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

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