Cita APA (7th ed.)

Toulmin, S. (1979). An Introduction to reasoning. Macmillan.

Cita Chicago (17th ed.)

Toulmin, Stephen. An Introduction to Reasoning. New York: Macmillan, 1979.

Cita MLA (9th ed.)

Toulmin, Stephen. An Introduction to Reasoning. Macmillan, 1979.