Castillo, A. C. (2011). DOJ reopens investigations on UP botanist's death. Philippine Collegian.
Chicago Style aipamenaCastillo, Abigail C. "DOJ Reopens Investigations on UP Botanist's Death." Philippine Collegian 2011.
MLA aipamenaCastillo, Abigail C. "DOJ Reopens Investigations on UP Botanist's Death." Philippine Collegian, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.