APA

Turell R., . (1959). Diseases of the colon and anorectum. Philadelphia: W.B. Saunders Company.

Chicago

Turell Robert, . 1959. Diseases of the colon and anorectum. Philadelphia: W.B. Saunders Company.

Harvard

Turell R., . (1959). Diseases of the colon and anorectum. Philadelphia: W.B. Saunders Company.

MLA

Turell Robert, . Diseases of the colon and anorectum. Philadelphia: W.B. Saunders Company. 1959.