University of Southern Mindanao. (1990). USM r & d journal. University of Southern Mindanao.
芝加哥风格引文University of Southern Mindanao. USM R & D Journal. Kabacan, Cotabato, Philippines: University of Southern Mindanao, 1990.
MLA引文University of Southern Mindanao. USM R & D Journal. University of Southern Mindanao, 1990.
警告：这些引文格式不一定是100％准确.