Singapore. Telecommunications Dept. Annual report. Govt. Printing Office.
Lua i Stíl Chicago (17ú heag.)Singapore. Telecommunications Dept. Annual Report. Singapore: Govt. Printing Office.
Lua MLA (8ú heag.)Singapore. Telecommunications Dept. Annual Report. Govt. Printing Office.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.