Echeminada, P. (1998). M'danao tribesmen don't need viagra. Philippine Star.
Tohutoru Kātū Chicago (17th ed.)Echeminada, Perseus. "M'danao Tribesmen Don't Need Viagra." Philippine Star 1998.
Tohutoro MLA (9th ed.)Echeminada, Perseus. "M'danao Tribesmen Don't Need Viagra." Philippine Star, 1998.
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