Selby, H. (1975). Social organization symbol, structure and setting. W.M.C Brown Company.
Lua i Stíl Chicago (17ú heag.)Selby, Henry. Social Organization Symbol, Structure and Setting. NULL: W.M.C Brown Company, 1975.
Lua MLA (9ú heag.)Selby, Henry. Social Organization Symbol, Structure and Setting. W.M.C Brown Company, 1975.
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