Cita APA (7a ed.)

Brown, S. J., Goetzmann, W. N., & Grinblatt, M. (1998). Positive portfolio factors. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Brown, Stephen J., William N. Goetzmann, y Mark Grinblatt. Positive Portfolio Factors. Cambridge, MA: National Bureau of Economic Research, 1998.

Cita MLA (9a ed.)

Brown, Stephen J., et al. Positive Portfolio Factors. National Bureau of Economic Research, 1998.