Gawiser, S. R., Witt, G. E., & Mears, W. R. (1994). A journalist's guide to public opinion polls. Praeger.
Lua i Stíl Chicago (17ú heag.)Gawiser, Sheldon R., G. Evans Witt, agus Walter R. Mears. A Journalist's Guide to Public Opinion Polls. Westport: Praeger, 1994.
Lua MLA (9ú heag.)Gawiser, Sheldon R., et al. A Journalist's Guide to Public Opinion Polls. Praeger, 1994.
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