Crisostomo, I. T. (2001). Writing books is hard but rewarding. Philippine Star.
Chicago-viite (17. p.)Crisostomo, Isabelo T. "Writing Books Is Hard but Rewarding." Philippine Star 2001.
MLA-viite (9. p.)Crisostomo, Isabelo T. "Writing Books Is Hard but Rewarding." Philippine Star, 2001.
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