Ardales, V. B. (1989). Coverage and extent of PHN activities in Western Visayas. Center for Integrative and Development Studies, University of the Philippines.
Chicago-referens (17:e uppl.)Ardales, Venancio B. Coverage and Extent of PHN Activities in Western Visayas. Quezon City: Center for Integrative and Development Studies, University of the Philippines, 1989.
MLA-referens (9:e uppl.)Ardales, Venancio B. Coverage and Extent of PHN Activities in Western Visayas. Center for Integrative and Development Studies, University of the Philippines, 1989.
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