Johnson, D. A. (1963). Logic and reasoning in mathematics. Webster.
Cita Chicago (17th ed.)Johnson, Donovan A. Logic and Reasoning in Mathematics. Saint Louis: Webster, 1963.
Cita MLA (9th ed.)Johnson, Donovan A. Logic and Reasoning in Mathematics. Webster, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.