English Language Services. (1966). Medicine. Collier-Macmillan International.
Cita Chicago (17th ed.)English Language Services. Medicine. London: Collier-Macmillan International, 1966.
Cita MLA (9th ed.)English Language Services. Medicine. Collier-Macmillan International, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.