APA (7 वां संस्करण) प्रशस्ति पत्र

JEFFREY, R. C. (1967). Formal logic: Its scope and limits. McGraw-Hill.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

JEFFREY, Richard C. Formal Logic: Its Scope and Limits. New York: McGraw-Hill, 1967.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

JEFFREY, Richard C. Formal Logic: Its Scope and Limits. McGraw-Hill, 1967.