APA Citation

Russell, R. C., & Dudley, H. (1975). Letter: Dangers of silent gall stones.

Chicago Style Citation

Russell, R C., and H. Dudley. Letter: Dangers of Silent Gall Stones. 1975.

MLA Citation

Russell, R C., and H. Dudley. Letter: Dangers of Silent Gall Stones. 1975.

Warning: These citations may not always be 100% accurate.