?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=0816051010+%2C+Sarastya+Satiti&rft.aulast=0816051010+&rft.aufirst=Sarastya+Satiti&rft.atitle=ABSTRACT+Implications+of+product+knowledge%2C+level+of+satisfaction+and+purchase+preference+to+the+brand+switching+on+BlackBerry+mobile+products+in+Bandar+Lampung+by+Sarastya+Satiti&rft.title=Digital+Library&rft.genre=article