Cita APA (7a ed.)

Booth, T., Potts, P., & Swann, W. (1988). Preventing difficulties in learning. Basil Blackwell [etc.].

Cita Chicago Style (17a ed.)

Booth, Tony, Patricia Potts, y Will Swann. Preventing Difficulties in Learning. Oxford [etc.]: Basil Blackwell [etc.], 1988.

Cita MLA (9a ed.)

Booth, Tony, et al. Preventing Difficulties in Learning. Basil Blackwell [etc.], 1988.