STEWART, D. C. (1986). The versatile writer. D.C. Heath.
Lua i Stíl Chicago (17ú heag.)STEWART, Donald C. The Versatile Writer. Lexington: D.C. Heath, 1986.
Lua MLA (9ú heag.)STEWART, Donald C. The Versatile Writer. D.C. Heath, 1986.
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