Coloma, O. A. (1968). A theory of agricultural development in the Philippines. College of Agriculture.
芝加哥风格引文Coloma, Othaniel A. A Theory of Agricultural Development in the Philippines. [Los Baños: College of Agriculture, 1968.
MLA引文Coloma, Othaniel A. A Theory of Agricultural Development in the Philippines. College of Agriculture, 1968.
警告：这些引文格式不一定是100％准确.