Gaya APA
WITOELAR, E. (2000).
International Competitive Bidding Unit Rate Contract .
Jakarta,DKI:
Dep.Pemukiman Dan Prasarana.
Gaya MLA
WITOELAR, Erna.
"International Competitive Bidding Unit Rate Contract".
Jakarta,DKI:
Dep.Pemukiman Dan Prasarana,
2000.
Text.