Bowen, K. A. (1991). Prolog And Expert Systems Kenneth A. Bowen. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Bowen, Kenneth A. Prolog And Expert Systems Kenneth A. Bowen. McGraw-Hill, 1991.
Lua MLA (8ú heag.)Bowen, Kenneth A. Prolog And Expert Systems Kenneth A. Bowen. McGraw-Hill, 1991.
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