Santos, E. T. (1996). The Law on obligation and contract. International Academy of Management & Economics.
芝加哥风格引文Santos, Emmanuel T. The Law on Obligation and Contract. Makati: International Academy of Management & Economics, 1996.
MLA引文Santos, Emmanuel T. The Law on Obligation and Contract. International Academy of Management & Economics, 1996.
警告：这些引文格式不一定是100％准确.