Eugenio, D. L. (2005). Philippine folk literature: The riddles. The University of the Philippines Press.
Chicago-viite (17. p.)Eugenio, Damiana L. Philippine Folk Literature: The Riddles. Diliman, Quezon city: The University of the Philippines Press, 2005.
MLA-viite (9. p.)Eugenio, Damiana L. Philippine Folk Literature: The Riddles. The University of the Philippines Press, 2005.
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