Cita APA (7a ed.)

Smith, M. J. (1989). Ethics and intervention. [s.n.].

Cita Chicago Style (17a ed.)

Smith, Michael Joseph. Ethics and Intervention. [S.l.]: [s.n.], 1989.

Cita MLA (9a ed.)

Smith, Michael Joseph. Ethics and Intervention. [s.n.], 1989.