APA استشهاد

Johnson, L. A. (1959). Employing the hard-core unemployed. American Management Association Inc.

استشهاد بنمط شيكاغو

Johnson, Lawrence A. Employing the Hard-core Unemployed. United states: American Management Association Inc, 1959.

MLA استشهاد

Johnson, Lawrence A. Employing the Hard-core Unemployed. American Management Association Inc, 1959.