کتاب های David Ortinau
Essentials of Marketing Research
Joseph F., Jr. Hair, Mary F. Wolfinbarger, David J. Ortinau, 2016
Investigación de mercados: en un ambiente de información digital
Joseph F. Hair Jr., Robert P. Bush, David J. Ortinau, 2010
Essentials of Marketing Research
Joseph Hair, Jr., Mary Celsi, Robert Bush, David Ortinau, 2010
Marketing Research
Joseph Hair, Jr., Robert Bush, David Ortinau, 2008
