Rakel, R. E. (1993). Essentials of family practice. Saunders.
Lua i Stíl Chicago (17ú heag.)Rakel, Robert E. Essentials of Family Practice. Philadelphia, PA: Saunders, 1993.
Lua MLA (9ú heag.)Rakel, Robert E. Essentials of Family Practice. Saunders, 1993.
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