APA aipamena

Siapno, F. E. (1998). Green brigade: A call to environmental action. Manila Bulletin.

Chicago Style aipamena

Siapno, Freriel E. "Green Brigade: A Call to Environmental Action." Manila Bulletin 1998.

MLA aipamena

Siapno, Freriel E. "Green Brigade: A Call to Environmental Action." Manila Bulletin, 1998.