Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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