Hiland, R. E., & Richardson, W. J. (1957). Work sampling. mc Graw Hill Book company.
Chicago Edition CitationHiland, Robert E., and Wallance J. Richardson. Work Sampling. New york: mc Graw Hill Book company, 1957.
Deismireacht MLAHiland, Robert E., and Wallance J. Richardson. Work Sampling. mc Graw Hill Book company, 1957.
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