Cita APA

Jeffrey, R. C., & Jeffrey, R. C. (1967). Formal logic: Its scope and limits. New York, New York: McGraw-Hill.

Citación estilo Chicago

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

Cita MLA

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