Colson, E. Tradition and contract: The problem of social order. Aldine De Gruyter.
Lua i Stíl Chicago (17ú heag.)Colson, Elizabeth. Tradition and Contract: The Problem of Social Order. New York: Aldine De Gruyter.
Lua MLA (9ú heag.)Colson, Elizabeth. Tradition and Contract: The Problem of Social Order. Aldine De Gruyter.
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