Gaya APA

Heathcote, I, W., Saputro, W, T. (1998). Integrated watershed management: principles and practice . New York: John Wiley & Sons.

Gaya MLA

Heathcote, Isabel, W.., Saputro, Wahju, T.. "Integrated watershed management: principles and practice". New York: John Wiley & Sons, 1998. Text.