Gaya APA
Hair, J, F. et al (2006).
Marketing research : within a changing information environment (3 rd Ed.).
New York:
McGraw-Hill Irwin.
Gaya MLA
Hair, Joseph, F.. et al.
"Marketing research : within a changing information environment".
3 rd Ed.
New York:
McGraw-Hill Irwin,
2006.
Text.