APA (7th ed.) Citation

Gathercole, C. (1969). Assessment in clinical psychology (1st pub., reprint.). Penguin Books.

Chicago Style (17th ed.) Citation

Gathercole, C.E. Assessment in Clinical Psychology. 1st pub., reprint. Harmondsworth [etc.]: Penguin Books, 1969.

MLA (9th ed.) Citation

Gathercole, C.E. Assessment in Clinical Psychology. 1st pub., reprint. Penguin Books, 1969.