Gaya APA
Indonesia.Bakosurtanal, . (1979).
International gravity standardization NET 1971 (IGSN-71) (Dok.15/1979) .
Cibinong:
Bakosurtanal.
Gaya MLA
Indonesia.Bakosurtanal, .
"International gravity standardization NET 1971 (IGSN-71) (Dok.15/1979)".
Cibinong:
Bakosurtanal,
1979.
Text.