APA aipamena

Katigbak, A. . F. (2006). Ecozone investments jump 32.9% to P67.15 B in 2005. Philippine Star.

Chicago Style aipamena

Katigbak, Antonio F. "Ecozone Investments Jump 32.9% to P67.15 B in 2005." Philippine Star 2006.

MLA aipamena

Katigbak, Antonio F. "Ecozone Investments Jump 32.9% to P67.15 B in 2005." Philippine Star, 2006.