BusinessWorld Pub. Corp. (2001). BusinessWorld top 1000 corporations in the Philippines. Business World Pub. Corp.
Chicago-referens (17:e uppl.)BusinessWorld Pub. Corp. BusinessWorld Top 1000 Corporations in the Philippines. Quezon City: Business World Pub. Corp, 2001.
MLA-referens (9:e uppl.)BusinessWorld Pub. Corp. BusinessWorld Top 1000 Corporations in the Philippines. Business World Pub. Corp, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.