APA aipamena

Weitz, B. A. (2007). Selling: Building partnerships. Boston: McGraw-Hill/Irwin.

Chicago Style aipamena

Weitz, Barton A. Selling: Building Partnerships. Boston: McGraw-Hill/Irwin, 2007.

MLA aipamena

Weitz, Barton A. Selling: Building Partnerships. Boston: McGraw-Hill/Irwin, 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.