Sapnu, R. (2005). Luisita union leader slain; four activists also murdered. Philippine Star.
Chicago-referens (17:e uppl.)Sapnu, Ric. "Luisita Union Leader Slain; Four Activists Also Murdered." Philippine Star 2005.
MLA-referens (9:e uppl.)Sapnu, Ric. "Luisita Union Leader Slain; Four Activists Also Murdered." Philippine Star, 2005.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.