Ronda, R. A. Conversion of PNR line into hybrid railway backed. IN Nation. The Philippine Star.
Lua i Stíl Chicago (17ú heag.)Ronda, Rainier Allan. "Conversion of PNR Line into Hybrid Railway Backed. IN Nation." The Philippine Star .
Lua MLA (9ú heag.)Ronda, Rainier Allan. "Conversion of PNR Line into Hybrid Railway Backed. IN Nation." The Philippine Star, .
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