Cayabyab, C. S. (1994). The PNP officers senior executive course: An evaluation and its implications to national security.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCayabyab, Cesar S. The PNP Officers Senior Executive Course: An Evaluation and Its Implications to National Security. 1994.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCayabyab, Cesar S. The PNP Officers Senior Executive Course: An Evaluation and Its Implications to National Security. 1994.
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