Zafra, N. 1. (1967). Philippine history through selected sources. Alemar-Phoenix Pub. House.
芝加哥风格引文Zafra, Nicolas 1892. Philippine History Through Selected Sources. Quezon City: Alemar-Phoenix Pub. House, 1967.
MLA引文Zafra, Nicolas 1892. Philippine History Through Selected Sources. Alemar-Phoenix Pub. House, 1967.
警告：这些引文格式不一定是100％准确.