DEBSKA. (1991). Upgrading your English. Univ.Press..
Chicago Style (17th ed.) CitationDEBSKA. Upgrading Your English. Oxford: Univ.Press., 1991.
MLA (9th ed.) CitationDEBSKA. Upgrading Your English. Univ.Press., 1991.
Warning: These citations may not always be 100% accurate.