APA (7th ed.) Citation

Bowlby, J. (1940). Personality and mental illness: An essay in psychiatric diagnosis. K. Paul, Trench, Trubner & co. ltd..

Chicago Style (17th ed.) Citation

Bowlby, John. Personality and Mental Illness: An Essay in Psychiatric Diagnosis. London: K. Paul, Trench, Trubner & co. ltd., 1940.

MLA (9th ed.) Citation

Bowlby, John. Personality and Mental Illness: An Essay in Psychiatric Diagnosis. K. Paul, Trench, Trubner & co. ltd., 1940.