APA aipamena

(2008). English for sales and purchasing (Kèm theo CD/ 825-26).

Chicago Style aipamena

English for Sales and Purchasing (Kèm Theo CD/ 825-26). 2008.

MLA aipamena

English for Sales and Purchasing (Kèm Theo CD/ 825-26). 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.