Steffens, H. J., Dickerson, M. J., & Fulwiler, T. (1987). Writer's guide. Heath.
Lua i Stíl Chicago (17ú heag.)Steffens, Henry John, Mary Jane Dickerson, agus Toby Fulwiler. Writer's Guide. Lexington, Mass: Heath, 1987.
Lua MLA (9ú heag.)Steffens, Henry John, et al. Writer's Guide. Heath, 1987.
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