Norback, C. T., & Bearse, M. (1980). The Complete book of American surveys. New American Library.
Cita Chicago Style (17a ed.)Norback, Craig T., y Myrna Bearse. The Complete Book of American Surveys. New York, N.Y.: New American Library, 1980.
Cita MLA (9a ed.)Norback, Craig T., y Myrna Bearse. The Complete Book of American Surveys. New American Library, 1980.
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