Lua APA (7ú heag.)

Não informado. (1974). Annual Index of Rheumatology. American Rheumatism Association.

Lua i Stíl Chicago (17ú heag.)

Não informado. Annual Index of Rheumatology. New York: American Rheumatism Association, 1974.

Lua MLA (8ú heag.)

Não informado. Annual Index of Rheumatology. American Rheumatism Association, 1974.

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