Garcia, L. R. (2003). Buy on-line advocacy campaign. IN Business focus [column]. Manila Bulletin.
Chicago-referens (17:e uppl.)Garcia, Leonardo R. "Buy On-line Advocacy Campaign. IN Business Focus [column]." Manila Bulletin 2003.
MLA-referens (9:e uppl.)Garcia, Leonardo R. "Buy On-line Advocacy Campaign. IN Business Focus [column]." Manila Bulletin, 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.