Roces, A. R. (2007). Environmentalist one of Gusi Prize awardees. IN Roses & Thorns [column]. Philippine Star.
Chicago-viite (17. p.)Roces, Alejandro R. "Environmentalist One of Gusi Prize Awardees. IN Roses & Thorns [column]." Philippine Star 2007.
MLA-viite (9. p.)Roces, Alejandro R. "Environmentalist One of Gusi Prize Awardees. IN Roses & Thorns [column]." Philippine Star, 2007.
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