Villanueva, M. A. (1997). New law sets Robin free by 1998. Philippine Star.
Chicago Style aipamenaVillanueva, Marichu A. "New Law Sets Robin Free by 1998." Philippine Star 1997.
MLA aipamenaVillanueva, Marichu A. "New Law Sets Robin Free by 1998." Philippine Star, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.