Hidalgo, F. C., Jr. (2010). Cagayan Valley railway system pushed. Manila Times.
Chicago-viite (17. p.)Hidalgo, Francis C., Jr. "Cagayan Valley Railway System Pushed." Manila Times 2010.
MLA-viite (9. p.)Hidalgo, Francis C., Jr. "Cagayan Valley Railway System Pushed." Manila Times, 2010.
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