Kelley & David. (1998). The Art of Reasoning (3rd ed.). W. W. Norton & Company.
Citazione stile Chigago Style (17a edizione)Kelley e David. The Art of Reasoning. 3rd ed. New York: W. W. Norton & Company, 1998.
Citatione MLA (9a ed.)Kelley e David. The Art of Reasoning. 3rd ed. W. W. Norton & Company, 1998.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.