Cita APA (7a ed.)

Powell, T. J. (2001). Head injury: A practical guide. Speechmark.

Cita Chicago Style (17a ed.)

Powell, Trevor J. Head Injury: A Practical Guide. Bicester: Speechmark, 2001.

Cita MLA (9a ed.)

Powell, Trevor J. Head Injury: A Practical Guide. Speechmark, 2001.