APA-Zitierstil (7. Ausg.)

Hearn, G. (1969). The general systems approach: Contributions toward an holistic conception of social work. Council on Social Work Education.

Chicago-Zitierstil (17. Ausg.)

Hearn, Gordon. The General Systems Approach: Contributions Toward an Holistic Conception of Social Work. New York: Council on Social Work Education, 1969.

MLA-Zitierstil (8. Ausg.)

Hearn, Gordon. The General Systems Approach: Contributions Toward an Holistic Conception of Social Work. Council on Social Work Education, 1969.