APA (7 वां संस्करण) प्रशस्ति पत्र

Costales, A. (1994). Comprehensive Agrarian Reform Program (CARP) and the fisheries, livestock and crop sectors: Adjustments in the pasture leases. Philippine Institute for Development Studies.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Costales, Achilles. Comprehensive Agrarian Reform Program (CARP) and the Fisheries, Livestock and Crop Sectors: Adjustments in the Pasture Leases. Makati, Metro Manila: Philippine Institute for Development Studies, 1994.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Costales, Achilles. Comprehensive Agrarian Reform Program (CARP) and the Fisheries, Livestock and Crop Sectors: Adjustments in the Pasture Leases. Philippine Institute for Development Studies, 1994.

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