Cruz, R. V. O. The watershed as a planning unit: A challenge to regional planning. Philippine planning journal.
Chicago Style (17th ed.) CitationCruz, Rex Victor O. "The Watershed as a Planning Unit: A Challenge to Regional Planning." Philippine Planning Journal .
MLA (9th ed.) CitationCruz, Rex Victor O. "The Watershed as a Planning Unit: A Challenge to Regional Planning." Philippine Planning Journal, .
Warning: These citations may not always be 100% accurate.