Ople, B. F. (1979). Frontiers of labor and social policy: Selected speeches. Institute of Labor and Manpower Studies, Ministry of Labor.
Chicago Style (17th ed.) CitationOple, Blas F. Frontiers of Labor and Social Policy: Selected Speeches. Manila: Institute of Labor and Manpower Studies, Ministry of Labor, 1979.
MLA (9th ed.) CitationOple, Blas F. Frontiers of Labor and Social Policy: Selected Speeches. Institute of Labor and Manpower Studies, Ministry of Labor, 1979.
Warning: These citations may not always be 100% accurate.