Costello, M. A., Costello, M. P., & Ravanera, Z. (1989). Service provision in the towns and cities of Northern Mindanao: Towards a planning framework. Population/Development Planning and Research Project, NEDA.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCostello, Michael A., Marilou Palabrica Costello, और Zenaida Ravanera. Service Provision in the Towns and Cities of Northern Mindanao: Towards a Planning Framework. [Pasig]: Population/Development Planning and Research Project, NEDA, 1989.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCostello, Michael A., et al. Service Provision in the Towns and Cities of Northern Mindanao: Towards a Planning Framework. Population/Development Planning and Research Project, NEDA, 1989.
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