Παραπομπή σε μορφή APA (7η εκδ.)

Velasco, M. M. (1999). PNOC petrochen park in Bataan declared as special economic zone. Manila Bulletin.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Velasco, Myrna M. "PNOC Petrochen Park in Bataan Declared as Special Economic Zone." Manila Bulletin 1999.

Παραπομπή σε μορφή MLA (9th εκδ.)

Velasco, Myrna M. "PNOC Petrochen Park in Bataan Declared as Special Economic Zone." Manila Bulletin, 1999.