Apolinario, C. (1975). Farm management studies in Cagayan Valley. Special Studies Division, Dept. of Agriculture.
芝加哥风格引文Apolinario, C.H. Farm Management Studies in Cagayan Valley. Quezon City: Special Studies Division, Dept. of Agriculture, 1975.
MLA引文Apolinario, C.H. Farm Management Studies in Cagayan Valley. Special Studies Division, Dept. of Agriculture, 1975.
警告：这些引文格式不一定是100％准确.