Velasco, E. (2018). Bidding on for Clark airport operations, maintenance-BCDA. Daily Tribune.
Lua i Stíl Chicago (17ú heag.)Velasco, Ed. "Bidding on for Clark Airport Operations, Maintenance-BCDA." Daily Tribune 2018.
Lua MLA (9ú heag.)Velasco, Ed. "Bidding on for Clark Airport Operations, Maintenance-BCDA." Daily Tribune, 2018.
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