Cita APA (7a ed.)

Arias, O., Hallock, K. F., & Sosa Escudero, W. (1999). Individual heterogeneity in the returns to schooling: Instrumental variables quantile regression using twins data.

Cita Chicago Style (17a ed.)

Arias, Omar, Kevin F. Hallock, y Walter Sosa Escudero. Individual Heterogeneity in the Returns to Schooling: Instrumental Variables Quantile Regression Using Twins Data. 1999.

Cita MLA (8a ed.)

Arias, Omar, et al. Individual Heterogeneity in the Returns to Schooling: Instrumental Variables Quantile Regression Using Twins Data. 1999.