BANGS, D. H. (1995). Pedoman Perencanaan Usaha(the Business Planning Guide). Erlangga.
Lua i Stíl Chicago (17ú heag.)BANGS, David H. Pedoman Perencanaan Usaha(the Business Planning Guide). Erlangga, 1995.
Lua MLA (8ú heag.)BANGS, David H. Pedoman Perencanaan Usaha(the Business Planning Guide). Erlangga, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.