APA

Lewis H., . (1982). The intellectual base of social work practice: tools for thought in a helping profession. New York: Lois and Samuel Silberman Fund.

Chicago

Lewis Harold, . 1982. The intellectual base of social work practice: tools for thought in a helping profession. New York: Lois and Samuel Silberman Fund.

Harvard

Lewis H., . (1982). The intellectual base of social work practice: tools for thought in a helping profession. New York: Lois and Samuel Silberman Fund.

MLA

Lewis Harold, . The intellectual base of social work practice: tools for thought in a helping profession. New York: Lois and Samuel Silberman Fund. 1982.