Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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