Cita APA (7a ed.)

Barratt, S., Burck, C., Barratt, S., & Kavner, E. (2013). Positions and Polarities in Contemporary Systemic Practice: The Legacy of David Campbell (First edition.). Karnac.

Cita Chicago Style (17a ed.)

Barratt, Sara, Charlotte Burck, Sara Barratt, y Ellie Kavner. Positions and Polarities in Contemporary Systemic Practice: The Legacy of David Campbell. First edition. London: Karnac, 2013.

Cita MLA (9a ed.)

Barratt, Sara, et al. Positions and Polarities in Contemporary Systemic Practice: The Legacy of David Campbell. First edition. Karnac, 2013.