Zastrow, C., Gingerich, W. J., Hull, G. H., Kirst-Ashman, K. K., Nolan, D., Sinclair, L. G., . . . Winship, J. P. (1989). The practice of social work (Third edition.). The Dorsey Press.

Zastrow, Charles, Wallace J. Gingerich, Grafton H. Hull, Karen K. Kirst-Ashman, Donald Nolan, Lloyd G. Sinclair, Carolyn Wells, and James P. Winship. The Practice of Social Work. Third edition. Chicago, Illinois: The Dorsey Press, 1989.

Zastrow, Charles, et al. The Practice of Social Work. Third edition. The Dorsey Press, 1989.