Bloomfield, D. (1920). Labor maintenance: A practical handbook of employees' service work. Ronald Press.
Chicago-viite (17. p.)Bloomfield, Daniel. Labor Maintenance: A Practical Handbook of Employees' Service Work. New York: Ronald Press, 1920.
MLA-viite (8. p.)Bloomfield, Daniel. Labor Maintenance: A Practical Handbook of Employees' Service Work. Ronald Press, 1920.
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