APA (7th ed.) Citation

Butt, T., Burr, V., & Dryden, W. (2004). Invitation to personal construct psychology (2nd ed.). Whurr.

Chicago Style (17th ed.) Citation

Butt, Trevor, Vivien Burr, and Windy Dryden. Invitation to Personal Construct Psychology. 2nd ed. London ; Philadelphia: Whurr, 2004.

MLA (9th ed.) Citation

Butt, Trevor, et al. Invitation to Personal Construct Psychology. 2nd ed. Whurr, 2004.