Cita APA (7a ed.)

Butler, C., Rollnick, S., Cohen, D., Bachmann, M., Russell, I., & Stott, N. (1999). Motivational consulting versus brief advice for smokers in general practice: A randomized trial.

Cita Chicago Style (17a ed.)

Butler, C., S. Rollnick, D. Cohen, M. Bachmann, I. Russell, y N. Stott. Motivational Consulting Versus Brief Advice for Smokers in General Practice: A Randomized Trial. 1999.

Cita MLA (9a ed.)

Butler, C., et al. Motivational Consulting Versus Brief Advice for Smokers in General Practice: A Randomized Trial. 1999.