Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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

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