Cita APA (7th ed.)
Greenhalgh, T. (1993). Medicine today. Longman.
Cita Chicago (17th ed.)
Greenhalgh, Trisha. Medicine Today. Hong Kong: Longman, 1993.
Cita MLA (9th ed.)
Greenhalgh, Trisha. Medicine Today. Longman, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.