Levitan, S., Mangum, G., Marshall, R. Human Resources and Labor Markets. Cambridge: Harper a. Row, 1981 551 с. : с табл., ил. 0-06-044074-0.
Levitan, S., Mangum, G., Marshall, R. Human Resources and Labor Markets. Cambridge: Harper a. Row, 1981 551 с. : с табл., ил. 0-06-044074-0.
Levitan, S., Mangum, G., Marshall, R. (1981) Human Resources and Labor Markets, Cambridge: Harper a. Row 551 с. : с табл., ил. 0-06-044074-0.
Levitan, S., Mangum, G., & Marshall, R. (1981). Human Resources and Labor Markets. Employment and Training in the American Economy. Cambridge: Harper a. Row, 551 с. : с табл., ил.
Levitan S, Mangum G, Marshall R. Human Resources and Labor Markets: Employment and Training in the American Economy. Cambridge: Harper a. Row; 1981. p. 551 с. : с табл., ил. ISBN: 0-06-044074-0.