APA
Handel M. J., . (2000). Trends in Direct Measures of Job Skill Requirements. Blithewood: The Jerome Levy Economics Institute.
Chicago
Handel Michael J, . 2000. Trends in Direct Measures of Job Skill Requirements. Blithewood: The Jerome Levy Economics Institute.
Harvard
Handel M. J., . (2000). Trends in Direct Measures of Job Skill Requirements. Blithewood: The Jerome Levy Economics Institute.
MLA
Handel Michael J, . Trends in Direct Measures of Job Skill Requirements. Blithewood: The Jerome Levy Economics Institute. 2000.