Bearden, W. O. (1998). Marketing principles and perspectives (2nd ed.). Boston, Mass.: Irwin/McGraw-Hill.
Chicago Style aipamenaBearden, William O. Marketing Principles and Perspectives. 2nd ed. Boston, Mass.: Irwin/McGraw-Hill, 1998.
MLA aipamenaBearden, William O. Marketing Principles and Perspectives. 2nd ed. Boston, Mass.: Irwin/McGraw-Hill, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.