Rakel, R. E. (1979). The yearbook of family practice 1979. Year Book Medical.
Citazione stile Chigago Style (17a edizione)Rakel, Robert E. The Yearbook of Family Practice 1979. Year Book Medical, 1979.
Citatione MLA (9a ed.)Rakel, Robert E. The Yearbook of Family Practice 1979. Year Book Medical, 1979.
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