Uhr, E. B. (1973). Marketing problems: Situations for analysis. Wiley.
Chicago Style aipamenaUhr, Ernest B. Marketing Problems: Situations for Analysis. New York: Wiley, 1973.
MLA aipamenaUhr, Ernest B. Marketing Problems: Situations for Analysis. Wiley, 1973.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.