Piyarom, V., & Vergara, E. M. (1963). The Presidential Assistant on Community Development: A study of organization and management practices. National College of Public Administration and Governance, University of the Philippines Diliman.

Piyarom, Vichit, and Ernesto M. Vergara. The Presidential Assistant on Community Development: A Study of Organization and Management Practices. Quezon City: National College of Public Administration and Governance, University of the Philippines Diliman, 1963.

Piyarom, Vichit, and Ernesto M. Vergara. The Presidential Assistant on Community Development: A Study of Organization and Management Practices. National College of Public Administration and Governance, University of the Philippines Diliman, 1963.