Lua APA (7ú heag.)

COPI IRVING M. (1979). SYMBOLIC LOGIC (5TH.). PRENTICE -HALL INTERNATIONAL; INC.

Lua i Stíl Chicago (17ú heag.)

COPI IRVING M. SYMBOLIC LOGIC. 5TH. NEW DELHI: PRENTICE -HALL INTERNATIONAL; INC, 1979.

Lua MLA (9ú heag.)

COPI IRVING M. SYMBOLIC LOGIC. 5TH. PRENTICE -HALL INTERNATIONAL; INC, 1979.

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