De Jesus, F., Pascual, S. S., Passion, B. J., Franco, C. and Mallari, M. R. (2024) “Analyzing the Return-Benefit on the Use of Modern Agricultural Machinery by Rice Farmers in Nueva Ecija, Philippines Using Modern Portfolio Theory (MPT)”, Research on World Agricultural Economy, 6(1), pp. 338–352. doi: 10.36956/rwae.v6i1.1431.