(1997). Vision Business Book Summaries. PT Elex Media Komputindo.
Lua i Stíl Chicago (17ú heag.)Vision Business Book Summaries. PT Elex Media Komputindo, 1997.
Lua MLA (8ú heag.)Vision Business Book Summaries. PT Elex Media Komputindo, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.