Gaya APA

IDRUS, A. (1992). Identification of physical-environmental characteristics of Ciliwung watershed, West Java, Indonesia using a geographic information system . : Ball State University.

Gaya MLA

IDRUS, Amwazi. "Identification of physical-environmental characteristics of Ciliwung watershed, West Java, Indonesia using a geographic information system". : Ball State University, 1992. Laporan.