APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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