APA (7th ed.) Citation

Barker, P. J. (1992). Severe depression: A practitioner's guide. Chapman & Hall.

Chicago Style (17th ed.) Citation

Barker, Philip J. Severe Depression: A Practitioner's Guide. London ; New York: Chapman & Hall, 1992.

MLA (8th ed.) Citation

Barker, Philip J. Severe Depression: A Practitioner's Guide. Chapman & Hall, 1992.