Dumlao, M. D. C. (1998). Revival of OPSF seen to cost gov't P70M a day. Philippine Daily Inquirer.
Chicago-viite (17. p.)Dumlao, Ma. Doris C. "Revival of OPSF Seen to Cost Gov't P70M a Day." Philippine Daily Inquirer 1998.
MLA-viite (9. p.)Dumlao, Ma. Doris C. "Revival of OPSF Seen to Cost Gov't P70M a Day." Philippine Daily Inquirer, 1998.
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