Cita APA (7a ed.)

Cho, Y., & Engle, R. F. (1999). Modeling the impacts of market activity on bid-ask spreads in the option market. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Cho, Young-Hye, y Robert F. Engle. Modeling the Impacts of Market Activity on Bid-ask Spreads in the Option Market. Cambridge, MA: National Bureau of Economic Research, 1999.

Cita MLA (9a ed.)

Cho, Young-Hye, y Robert F. Engle. Modeling the Impacts of Market Activity on Bid-ask Spreads in the Option Market. National Bureau of Economic Research, 1999.