APA-referens (7:e uppl.)

Levin, G., & Roberts, E. B. (1976). The dynamics of human service delivery. Ballinger Publishing Co.

Chicago-referens (17:e uppl.)

Levin, Gilbert, och Edward B. Roberts. The Dynamics of Human Service Delivery. Cambridge, Mass: Ballinger Publishing Co, 1976.

MLA-referens (9:e uppl.)

Levin, Gilbert, och Edward B. Roberts. The Dynamics of Human Service Delivery. Ballinger Publishing Co, 1976.