Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.