APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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