Lua APA (7ú heag.)

Não informado. (1972). Oral History. University of Essex, Sociology Department.

Lua i Stíl Chicago (17ú heag.)

Não informado. Oral History. Colchester, Inglaterra: University of Essex, Sociology Department, 1972.

Lua MLA (8ú heag.)

Não informado. Oral History. University of Essex, Sociology Department, 1972.

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