Eugenio, D. L. (1994). Philippine folk literature: The riddles. University of the Philippines Press.
芝加哥风格引文Eugenio, Damiana L. Philippine Folk Literature: The Riddles. Quezon City: University of the Philippines Press, 1994.
MLA引文Eugenio, Damiana L. Philippine Folk Literature: The Riddles. University of the Philippines Press, 1994.
警告：这些引文格式不一定是100％准确.