Sicat, G. P. (2002). The four-day work week mistake. IN Feedback [column]. Philippine Star.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSicat, Gerardo P. "The Four-day Work Week Mistake. IN Feedback [column]." Philippine Star 2002.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSicat, Gerardo P. "The Four-day Work Week Mistake. IN Feedback [column]." Philippine Star, 2002.
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