Lua APA (7ú heag.)

Não informado. (1977). Population Reports. Johns Hopkins University, Population Information Program.

Lua i Stíl Chicago (17ú heag.)

Não informado. Population Reports. Baltimore, Md: Johns Hopkins University, Population Information Program, 1977.

Lua MLA (8ú heag.)

Não informado. Population Reports. Johns Hopkins University, Population Information Program, 1977.

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