APA aipamena

Cruz, R. V. O. The watershed as a planning unit: A challenge to regional planning. Philippine planning journal.

Chicago Style aipamena

Cruz, Rex Victor O. "The Watershed as a Planning Unit: A Challenge to Regional Planning." Philippine Planning Journal .

MLA aipamena

Cruz, Rex Victor O. "The Watershed as a Planning Unit: A Challenge to Regional Planning." Philippine Planning Journal, .