Wyrick, J. (1990). Steps to writing well: With additional readings. Holt, Rinehart and Winston.
Lua i Stíl Chicago (17ú heag.)Wyrick, Jean. Steps to Writing Well: With Additional Readings. Fort Worth: Holt, Rinehart and Winston, 1990.
Lua MLA (9ú heag.)Wyrick, Jean. Steps to Writing Well: With Additional Readings. Holt, Rinehart and Winston, 1990.
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