Dela Cruz, R. (2006). Duka Bay: An ecological business paradigan. Philippine Star.
Cita Chicago (17th ed.)Dela Cruz, Rose. "Duka Bay: An Ecological Business Paradigan." Philippine Star 2006.
Cita MLA (9th ed.)Dela Cruz, Rose. "Duka Bay: An Ecological Business Paradigan." Philippine Star, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.