APA
George E. Block, . (1973). The Surgical Clinics of North America. Philadelphia: W. B. Saunders Company.
Chicago
George E. Block, . 1973. The Surgical Clinics of North America. Philadelphia: W. B. Saunders Company.
Harvard
George E. Block, . (1973). The Surgical Clinics of North America. Philadelphia: W. B. Saunders Company.
MLA
George E. Block, . The Surgical Clinics of North America. Philadelphia: W. B. Saunders Company. 1973.