Cita APA (7a ed.)

Halpern, H. A. (1979). A systems-crisis approach to family treatment. [s.n.].

Cita Chicago Style (17a ed.)

Halpern, Howard A. A Systems-crisis Approach to Family Treatment. [S.l.]: [s.n.], 1979.

Cita MLA (9a ed.)

Halpern, Howard A. A Systems-crisis Approach to Family Treatment. [s.n.], 1979.