Levin, G., & Roberts, E. B. (1976). The dynamics of human service delivery. Ballinger Publishing Co.
Dyfyniad Arddull ChicagoLevin, Gilbert, and Edward B. Roberts. The Dynamics of Human Service Delivery. Cambridge, Mass: Ballinger Publishing Co, 1976.
Dyfyniad MLALevin, Gilbert, and Edward B. Roberts. The Dynamics of Human Service Delivery. Ballinger Publishing Co, 1976.
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