Gaya APA

Wisner, P., C., P, E. (1982). Otthymo - A Planning Model for Master Drainage Plans in Urban Areas . : Pitman Advanced Publishing.

Gaya MLA

Wisner, P.., C., P'ng, Eng,. "Otthymo - A Planning Model for Master Drainage Plans in Urban Areas". : Pitman Advanced Publishing, 1982. Text.