Sapnu, R. (1999). Pinay calendar genius wants to wake it to Guiness Book. Philippine Star.
Chicago-viite (17. p.)Sapnu, Ric. "Pinay Calendar Genius Wants to Wake It to Guiness Book." Philippine Star 1999.
MLA-viite (9. p.)Sapnu, Ric. "Pinay Calendar Genius Wants to Wake It to Guiness Book." Philippine Star, 1999.
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