References
- Beck, A.T., “Depression”. Staple Press, London, 1967.
- Blythe, Peter. “Stress”. Pan Books Ltd., 1975.
- Kraines, S.H. “Mental Depressions and their Treatment.” The McMillan Coy. New York, 1957.
- Sheehy, Gail. “Passages.” Bantam Books, Inc. 1977.
- Watts. C.A.H. “Depressive Disorders in the Community”. John Wright & sons, Bristol Ltd. 1966.