APA-Zitierstil (7. Ausg.)

Blackburn, M. L., & Neumark, D. (1993). Are OLS estimates of the return to schooling biased downward?: Another look. NBER.

Chicago-Zitierstil (17. Ausg.)

Blackburn, McKinley L., und David Neumark. Are OLS Estimates of the Return to Schooling Biased Downward?: Another Look. Cambridge, Mass: NBER, 1993.

MLA-Zitierstil (9. Ausg.)

Blackburn, McKinley L., und David Neumark. Are OLS Estimates of the Return to Schooling Biased Downward?: Another Look. NBER, 1993.