Cita APA (7a ed.)

Butler, I., & Williamson, H. (1994). Children speak: Children, trauma and social work. Longman.

Cita Chicago Style (17a ed.)

Butler, Ian, y Howard Williamson. Children Speak: Children, Trauma and Social Work. Harlow: Longman, 1994.

Cita MLA (9a ed.)

Butler, Ian, y Howard Williamson. Children Speak: Children, Trauma and Social Work. Longman, 1994.