Cita APA (7th ed.)

Ruiz, E. (2012). DENR monitoring mine tunnel collapse. Manila Bulletin.

Cita Chicago (17th ed.)

Ruiz, Ellalyn. "DENR Monitoring Mine Tunnel Collapse." Manila Bulletin 2012.

Cita MLA (9th ed.)

Ruiz, Ellalyn. "DENR Monitoring Mine Tunnel Collapse." Manila Bulletin, 2012.