Philippines. Regional Development Council, Region II. (1977). Cagayan Valley regional development plan, 1978-1982. RDC II.
Cita Chicago (17th ed.)Philippines. Regional Development Council, Region II. Cagayan Valley Regional Development Plan, 1978-1982. Tuguegarao City: RDC II, 1977.
Cita MLA (9th ed.)Philippines. Regional Development Council, Region II. Cagayan Valley Regional Development Plan, 1978-1982. RDC II, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.