Cita APA (7th ed.)

Panaligan, R. G. (1999). Environmental protection pledged by 10 countries. Manila Bulletin.

Cita Chicago (17th ed.)

Panaligan, Rey G. "Environmental Protection Pledged by 10 Countries." Manila Bulletin 1999.

Cita MLA (9th ed.)

Panaligan, Rey G. "Environmental Protection Pledged by 10 Countries." Manila Bulletin, 1999.