Ocampo, S. C. (2020). Three 50th anniversaries and what each is telling us. IN At ground level [column]. Philippine Star.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOcampo, Satur C. "Three 50th Anniversaries and What Each Is Telling Us. IN At Ground Level [column]." Philippine Star 2020.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOcampo, Satur C. "Three 50th Anniversaries and What Each Is Telling Us. IN At Ground Level [column]." Philippine Star, 2020.
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