Levin, G., & Roberts, E. B. (1976). The dynamics of human service delivery. Ballinger Publishing Co.
Citazione stile Chigago Style (17a edizione)Levin, Gilbert, e Edward B. Roberts. The Dynamics of Human Service Delivery. Cambridge, Mass: Ballinger Publishing Co, 1976.
Citatione MLA (9a ed.)Levin, Gilbert, e Edward B. Roberts. The Dynamics of Human Service Delivery. Ballinger Publishing Co, 1976.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.