Guth, H. P. (1989). The writer's agenda: The Wadsworth writer's guide and handbook (Shorter ed.). Wadsworth Pub.
Chicago-viite (17. p.)Guth, Hans Paul. The Writer's Agenda: The Wadsworth Writer's Guide and Handbook. Shorter ed. Belmont, CA: Wadsworth Pub, 1989.
MLA-viite (9. p.)Guth, Hans Paul. The Writer's Agenda: The Wadsworth Writer's Guide and Handbook. Shorter ed. Wadsworth Pub, 1989.
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