Costello, M. (1992). Net migration in the Philippines: 1980-1990. Department of Labor and Employment/ILO-ARTEP.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCostello, Michael. Net Migration in the Philippines: 1980-1990. Manila: Department of Labor and Employment/ILO-ARTEP, 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCostello, Michael. Net Migration in the Philippines: 1980-1990. Department of Labor and Employment/ILO-ARTEP, 1992.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.