Dyfyniad APA

COPI, I. M. (1969). Introduction to logic.-- 3rd ed. The Macmillan Company.

Dyfyniad Arddull Chicago

COPI, Irving M. Introduction to Logic.-- 3rd Ed. London: The Macmillan Company, 1969.

Dyfyniad MLA

COPI, Irving M. Introduction to Logic.-- 3rd Ed. The Macmillan Company, 1969.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.