Gaya APA

Hartmann, E., Unger, H. ([s.a.]). Infrastructure The Good & The Bad House Construction . Jakarta: Kantor Bank Dunia Jakarta.

Gaya MLA

Hartmann, Ekart., Unger, Heinz. "Infrastructure The Good & The Bad House Construction". Jakarta: Kantor Bank Dunia Jakarta, [s.a.]. Koleksi World Bank.