APA (7e ed.) Bronvermelding

Ang, L. S. (1979). Comparative input, output and financial data for cotton, palay, burley tobacco, virginia tobacco, and native tobacco, Ilocos region, Tarlac and Nueva Ecija, 1979. Special Studies Division, Ministry of Agriculture.

Chicago (17e ed.) Bronvermelding

Ang, L. S. Comparative Input, Output and Financial Data for Cotton, Palay, Burley Tobacco, Virginia Tobacco, and Native Tobacco, Ilocos Region, Tarlac and Nueva Ecija, 1979. Quezon City: Special Studies Division, Ministry of Agriculture, 1979.

MLA (9e ed.) Bronvermelding

Ang, L. S. Comparative Input, Output and Financial Data for Cotton, Palay, Burley Tobacco, Virginia Tobacco, and Native Tobacco, Ilocos Region, Tarlac and Nueva Ecija, 1979. Special Studies Division, Ministry of Agriculture, 1979.