Holbert, N. B. (1993). Practical marketing research: An integrated global perspective / Neil Bruce Holbert, Mark W. Speece. Prentice-Hall.
Chicago-referens (17:e uppl.)Holbert, Neil Bruce. Practical Marketing Research: An Integrated Global Perspective / Neil Bruce Holbert, Mark W. Speece. New York: Prentice-Hall, 1993.
MLA-referens (9:e uppl.)Holbert, Neil Bruce. Practical Marketing Research: An Integrated Global Perspective / Neil Bruce Holbert, Mark W. Speece. Prentice-Hall, 1993.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.