Black, M. (1952). Critical Thinking: An introduction to logic and scientific Method (2nd ed.). Printice- Hall.
Cita Chicago (17th ed.)Black, Max. Critical Thinking: An Introduction to Logic and Scientific Method. 2nd ed. Englewood Clif.: Printice- Hall, 1952.
Cita MLA (9th ed.)Black, Max. Critical Thinking: An Introduction to Logic and Scientific Method. 2nd ed. Printice- Hall, 1952.
Atenció: Aquestes cites poden no estar 100% correctes.