Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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