Gaya APA
TJIA, J, T, Y. (1985).
A landscape plan for Cilanang watershed .
Wageningen:
Agricultural university Wageningen .
Gaya MLA
TJIA, J.G.J.;, Tjiook,, Y.H..
"A landscape plan for Cilanang watershed".
Wageningen:
Agricultural university Wageningen ,
1985.
Majalah.