APA-referens (7:e uppl.)

copi irving M., C. c. (2005). Introduction To Logic (11th.). Prentice hall.

Chicago-referens (17:e uppl.)

copi irving M., Cohen carl. Introduction To Logic. 11th. New Delhi: Prentice hall, 2005.

MLA-referens (9:e uppl.)

copi irving M., Cohen carl. Introduction To Logic. 11th. Prentice hall, 2005.