Cita APA (7th ed.)

Kelley & David. (1998). The Art of Reasoning (3rd ed.). W. W. Norton & Company.

Cita Chicago (17th ed.)

Kelley i David. The Art of Reasoning. 3rd ed. New York: W. W. Norton & Company, 1998.

Cita MLA (9th ed.)

Kelley i David. The Art of Reasoning. 3rd ed. W. W. Norton & Company, 1998.