Beers, M. H., & Berkow, R. (1999). The Merck manual of diagnosis and therapy (17th ed.). Merck Research Laboratories.
Chicago-viite (17. p.)Beers, Mark H., ja Robert Berkow. The Merck Manual of Diagnosis and Therapy. 17th ed. Whitehouse Station, NJ: Merck Research Laboratories, 1999.
MLA-viite (9. p.)Beers, Mark H., ja Robert Berkow. The Merck Manual of Diagnosis and Therapy. 17th ed. Merck Research Laboratories, 1999.
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