APA Style

Frost, G, S, A, R, O. (2007). Compulsive Hoarding and Acquiring: Therapist Guide . New York: Oxford University Press Inc.

MLA Style

Frost, Gail, Steketee, And, Randy, O.. "Compulsive Hoarding and Acquiring: Therapist Guide". New York: Oxford University Press Inc, 2007. Psychology.