Breen, G. E., & Blankenship, A. (1982). Do-it-yourself marketing research (2d ed.). McGraw-Hill.
Cita Chicago Style (17a ed.)Breen, George Edward, y A.B Blankenship. Do-it-yourself Marketing Research. 2d ed. New York: McGraw-Hill, 1982.
Cita MLA (9a ed.)Breen, George Edward, y A.B Blankenship. Do-it-yourself Marketing Research. 2d ed. McGraw-Hill, 1982.
Precaución: Estas citas no son 100% exactas.