Herrin, A. N. (1982). The Cagayan Valley Rural Electrification Project: An impact assessment. Philippine Center for Economic Development.
Chicago-viite (17. p.)Herrin, Alejandro N. The Cagayan Valley Rural Electrification Project: An Impact Assessment. Quezon City: Philippine Center for Economic Development, 1982.
MLA-viite (9. p.)Herrin, Alejandro N. The Cagayan Valley Rural Electrification Project: An Impact Assessment. Philippine Center for Economic Development, 1982.
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