APA
Cameron S. V., Heckman James J & National Bureau Of Economic Research. (1998). Life cycle schooling and dynamic selection bias: models and evidence for five cohorts of American males. Cambridge, MA: NBER.
Chicago
Cameron Stephen V, Heckman James J and National Bureau Of Economic Research. 1998. Life cycle schooling and dynamic selection bias: models and evidence for five cohorts of American males. Cambridge, MA: NBER.
Harvard
Cameron S. V., Heckman James J and National Bureau Of Economic Research. (1998). Life cycle schooling and dynamic selection bias: models and evidence for five cohorts of American males. Cambridge, MA: NBER.
MLA
Cameron Stephen V, Heckman James J and National Bureau Of Economic Research. Life cycle schooling and dynamic selection bias: models and evidence for five cohorts of American males. Cambridge, MA: NBER. 1998.