Beri,G.C. (2008). Marketing research/4e (4th ed.). T.M.H.
Citación estilo ChicagoBeri,G.C. Marketing Research/4e. 4th ed. T.M.H, 2008.
Cita MLABeri,G.C. Marketing Research/4e. 4th ed. T.M.H, 2008.
Warning: These citations may not always be 100% accurate.