Mariano, M. J. (2017). Security guards as force multipliers. Philippine Graphic.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMariano, Manuel Jr. "Security Guards as Force Multipliers." Philippine Graphic 2017.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMariano, Manuel Jr. "Security Guards as Force Multipliers." Philippine Graphic, 2017.
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