Lua APA (7ú heag.)
Turk, C., & Kirkman, J. (1989). Effective writing: Improving scientific, technical and business communication (2nd ed.). Chapman & Hall.
Lua i Stíl Chicago (17ú heag.)
Turk, Christopher, agus John Kirkman. Effective Writing: Improving Scientific, Technical and Business Communication. 2nd ed. New York: Chapman & Hall, 1989.
Lua MLA (9ú heag.)
Turk, Christopher, agus John Kirkman. Effective Writing: Improving Scientific, Technical and Business Communication. 2nd ed. Chapman & Hall, 1989.
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