APA (7e ed.) Bronvermelding

Valencia, L. B. (2003). By 2005, one in four Filipinos is a mobile phone user - CLS. Manila Bulletin.

Chicago (17e ed.) Bronvermelding

Valencia, Lynda B. "By 2005, One in Four Filipinos Is a Mobile Phone User - CLS." Manila Bulletin 2003.

MLA (9e ed.) Bronvermelding

Valencia, Lynda B. "By 2005, One in Four Filipinos Is a Mobile Phone User - CLS." Manila Bulletin, 2003.