Rybacki, K. C., & Rybacki, D. J. (1996). Advocacy and opposition: An introduction to argumentation. Allyn and Bacon.
Lua i Stíl Chicago (17ú heag.)Rybacki, Karyn C., agus Donald J. Rybacki. Advocacy and Opposition: An Introduction to Argumentation. Boston: Allyn and Bacon, 1996.
Lua MLA (9ú heag.)Rybacki, Karyn C., agus Donald J. Rybacki. Advocacy and Opposition: An Introduction to Argumentation. Allyn and Bacon, 1996.
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