Pore, L. (1997). The secret of successful brands. Manila Times.
Cita Chicago (17th ed.)Pore, Lyra. "The Secret of Successful Brands." Manila Times 1997.
Cita MLA (9th ed.)Pore, Lyra. "The Secret of Successful Brands." Manila Times, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.