APA (7th ed.) Citation

O'Hanlon, B., Wilk, J., & Weakland, J. H. (1987). Shifting contexts: : the generation of effective psychotherapy. Guilford.

Chicago Style (17th ed.) Citation

O'Hanlon, Bill, James Wilk, and John H. Weakland. Shifting Contexts: : The Generation of Effective Psychotherapy. New York [etc.]: Guilford, 1987.

MLA (9th ed.) Citation

O'Hanlon, Bill, et al. Shifting Contexts: : The Generation of Effective Psychotherapy. Guilford, 1987.