ebrary, Inc, Eng Ong, S., & Yu, S. (2002). World Valuation Congress. Emerald Group Publishing.
Cita Chicago (17th ed.)ebrary, Inc, Seow Eng Ong, i Shiming Yu. World Valuation Congress. Bradford, England: Emerald Group Publishing, 2002.
Cita MLA (9th ed.)ebrary, Inc, et al. World Valuation Congress. Emerald Group Publishing, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.