APA ציטוט

Jeffrey, R. C. (1989). Formal logic: Its scope and limits (2nd ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Jeffrey, Richard C. Formal Logic: Its Scope and Limits. 2nd ed. New York: McGraw-Hill, 1989.

ציטוט MLA

Jeffrey, Richard C. Formal Logic: Its Scope and Limits. 2nd ed. McGraw-Hill, 1989.