Turk, C., & Kirkman, J. (1989). Effective writing: Improving scientific technical and business communication (2nd ed.). E & F N Spon.
Lua i Stíl Chicago (17ú heag.)Turk, Christopher, agus John Kirkman. Effective Writing: Improving Scientific Technical and Business Communication. 2nd ed. London: E & F N Spon, 1989.
Lua MLA (9ú heag.)Turk, Christopher, agus John Kirkman. Effective Writing: Improving Scientific Technical and Business Communication. 2nd ed. E & F N Spon, 1989.
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