Harrison, T. R. (1980). Principles of internal medicine (9 ed.). McGraw - Hill Book Company.
Lua i Stíl Chicago (17ú heag.)Harrison, T. R. Principles of Internal Medicine. 9 ed. New York: McGraw - Hill Book Company, 1980.
Lua MLA (9ú heag.)Harrison, T. R. Principles of Internal Medicine. 9 ed. McGraw - Hill Book Company, 1980.
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