Philippines. Region II. Regional Development Council. (2001). Regional strategic development plan 2001-2004: Cagayan Valley (Region II). Regional Development Council.
Παραπομπή σε μορφή Chicago (17η εκδ.)Philippines. Region II. Regional Development Council. Regional Strategic Development Plan 2001-2004: Cagayan Valley (Region II). Cagayan Valley: Regional Development Council, 2001.
Παραπομπή σε μορφή MLA (9th εκδ.)Philippines. Region II. Regional Development Council. Regional Strategic Development Plan 2001-2004: Cagayan Valley (Region II). Regional Development Council, 2001.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.