Singapore. Telecommunications Dept. Annual report. Govt. Printing Office.
Citação norma ChicagoSingapore. Telecommunications Dept. Annual Report. Singapore: Govt. Printing Office.
Citação norma MLASingapore. Telecommunications Dept. Annual Report. Govt. Printing Office.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.