Pagsanjan-Estrera, I. (2003). Environmentalists slam Bt corn commercialization: Hunger strike continues. Philippine Collegian.
Chicago-referens (17:e uppl.)Pagsanjan-Estrera, Iris. "Environmentalists Slam Bt Corn Commercialization: Hunger Strike Continues." Philippine Collegian 2003.
MLA-referens (9:e uppl.)Pagsanjan-Estrera, Iris. "Environmentalists Slam Bt Corn Commercialization: Hunger Strike Continues." Philippine Collegian, 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.