Gaya APA
Barrett, E, C., Suryanta, J. (2003).
Neraca sumberdaya air spasial DAS Limboto Bolango Bone .
Cibinong:
Bakosurtanal.
Gaya MLA
Barrett, Eric, C.., Suryanta, Jaka.
"Neraca sumberdaya air spasial DAS Limboto Bolango Bone".
Cibinong:
Bakosurtanal,
2003.
Text.