Cita APA (7th ed.)

Toulmin, S. (2003). Return to reason (2a. ed.). Harvard University Press.

Cita Chicago (17th ed.)

Toulmin, Stephen. Return to Reason. 2a. ed. Cambridge: Harvard University Press, 2003.

Cita MLA (9th ed.)

Toulmin, Stephen. Return to Reason. 2a. ed. Harvard University Press, 2003.