Gaya APA
J.Ossenbruggen, P. (1984).
(TEKNIK SIPIL 2) System Analysis for Civil Engineers (1).
Canada:
John Wiley & Sons, Inc..
Gaya MLA
J.Ossenbruggen, Paul.
"(TEKNIK SIPIL 2) System Analysis for Civil Engineers".
1
Canada:
John Wiley & Sons, Inc.,
1984.
.