Dyfyniad APA

Walton, D. N. (1989). Informal logic: A handbook for critical argumentation. Cambridge University Press.

Dyfyniad Arddull Chicago

Walton, Douglas N. Informal Logic: A Handbook for Critical Argumentation. Cambridge: Cambridge University Press, 1989.

Dyfyniad MLA

Walton, Douglas N. Informal Logic: A Handbook for Critical Argumentation. Cambridge University Press, 1989.

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