Não informado. (1969). Man-environment Systems. Association for the Study of Man-Environment Relations.
Lua i Stíl Chicago (17ú heag.)Não informado. Man-environment Systems. Orange, NJ: Association for the Study of Man-Environment Relations, 1969.
Lua MLA (8ú heag.)Não informado. Man-environment Systems. Association for the Study of Man-Environment Relations, 1969.
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