Macuja, A. M. (2002). SEC lists 26 firms in pyramid scheme. Manila Bulletin.
Cita Chicago (17th ed.)Macuja, Ana Marie. "SEC Lists 26 Firms in Pyramid Scheme." Manila Bulletin 2002.
Cita MLA (9th ed.)Macuja, Ana Marie. "SEC Lists 26 Firms in Pyramid Scheme." Manila Bulletin, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.