Ang, L. (1980). Comparative input, output and financial data from cotton, palay, burley tobacco, virginia tobacco and native tobacco, Ilocos region, Tarlac, Nueva Ecija and Cagayan, 1980: L.S. Ang ... [et al.]. Special Studies Division, Ministry of Agriculture.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAng, L.S. Comparative Input, Output and Financial Data from Cotton, Palay, Burley Tobacco, Virginia Tobacco and Native Tobacco, Ilocos Region, Tarlac, Nueva Ecija and Cagayan, 1980: L.S. Ang ... [et Al.]. Quezon City: Special Studies Division, Ministry of Agriculture, 1980.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAng, L.S. Comparative Input, Output and Financial Data from Cotton, Palay, Burley Tobacco, Virginia Tobacco and Native Tobacco, Ilocos Region, Tarlac, Nueva Ecija and Cagayan, 1980: L.S. Ang ... [et Al.]. Special Studies Division, Ministry of Agriculture, 1980.