Cita APA (7th ed.)

Harkins, H. N., & Nyhus, L. M. (1969). Surgery of the stomach and duodenum. Little, Brown.

Cita Chicago (17th ed.)

Harkins, Henry Nelson, i Lloyd M. Nyhus. Surgery of the Stomach and Duodenum. Boston: Little, Brown, 1969.

Cita MLA (9th ed.)

Harkins, Henry Nelson, i Lloyd M. Nyhus. Surgery of the Stomach and Duodenum. Little, Brown, 1969.