Angell, R. B. (1964). Reasoning and Logic. Appleton-Century-Crofts.
Cita Chicago (17th ed.)Angell, Richard B. Reasoning and Logic. New York: Appleton-Century-Crofts, 1964.
Cita MLA (9th ed.)Angell, Richard B. Reasoning and Logic. Appleton-Century-Crofts, 1964.
Atenció: Aquestes cites poden no estar 100% correctes.