Austad, Carol Shaw. Counseling and Psychotherapy Today: Theory, Practice, and Research. New York: McGraw-Hill Higher Education, 2009. Print.
Berne, Eric. Games People Play: The Psychology of Human Relationships. London: Penguin Books, 2010. Print.
Corey, Gerald and California State University. Theory and Practice of Counseling and Psychotherapy. 9th ed., Student ed. Belmont, California: Brooks/Cole, 2013. Print.
Holmes, Jeremy. The Search for the Secure Base: Attachment Theory and Psychotherapy. Hove, East Sussex: Routledge, 2001. Print.
McDermott, Ian, Wendy Jago, and ebrary, Inc. Brief NLP Therapy. Brief therapies series. London: Sage Publications, 2001. Web. <https://ebookcentral.proquest.com/lib/nottingham/detail.action?docID=254686>.
McLeod, John. An Introduction to Counselling. 4th ed. Maidenhead, Berkshire: McGraw-Hill/Open University Press, 2009. Print.
Sommers-Flanagan, John, and Rita Sommers-Flanagan. Counseling and Psychotherapy Theories in Context and Practice: Skills, Strategies, and Techniques. 2nd ed. Hoboken, New Jersey: John Wiley, 2012. Print.