Cole, R., Cole, R. H., & Mishler, L. (1995). Consumer and business credit management (10th ed.). Irwin.
Lua i Stíl Chicago (17ú heag.)Cole, Robert, Robert Hartzell Cole, agus Lou Mishler. Consumer and Business Credit Management. 10th ed. Chicago: Irwin, 1995.
Lua MLA (9ú heag.)Cole, Robert, et al. Consumer and Business Credit Management. 10th ed. Irwin, 1995.
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