Cita APA (7th ed.)
Schwartz, T. (1980). The art of logical reasoning. Random House.
Cita Chicago (17th ed.)
Schwartz, Thomas. The Art of Logical Reasoning. New York: Random House, 1980.
Cita MLA (9th ed.)
Schwartz, Thomas. The Art of Logical Reasoning. Random House, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.