Seminar on Opinion Polls. Seville, España, World Association for Public Opinion Research, & ESOMAR. (1989). Seminar on opinion polls in conjunction with the World Association for Public Opinion Research--WAPOR: Seville (Spain), 22nd-25th February 1989. ESOMAR..
Cita Chicago Style (17a ed.)Seminar on Opinion Polls. Seville, España, World Association for Public Opinion Research, y ESOMAR. Seminar on Opinion Polls in Conjunction with the World Association for Public Opinion Research--WAPOR: Seville (Spain), 22nd-25th February 1989. Amsterdam: ESOMAR., 1989.
Cita MLA (8a ed.)Seminar on Opinion Polls. Seville, España, et al. Seminar on Opinion Polls in Conjunction with the World Association for Public Opinion Research--WAPOR: Seville (Spain), 22nd-25th February 1989. ESOMAR., 1989.