Philippines. Civil Service Commission. (2011). 2011 memorandum circulars. Civil Service Commission.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPhilippines. Civil Service Commission. 2011 Memorandum Circulars. Metro Manila: Civil Service Commission, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPhilippines. Civil Service Commission. 2011 Memorandum Circulars. Civil Service Commission, 2011.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.