APA (7th ed.) Citation

Dörken, H. (1976). The professional psychologist today / (by) Herbert Dörken and associates. Jossey-Bass.

Chicago Style (17th ed.) Citation

Dörken, Herbert. The Professional Psychologist Today / (by) Herbert Dörken and Associates. San Francisco (etc.) ; London: Jossey-Bass, 1976.

MLA (9th ed.) Citation

Dörken, Herbert. The Professional Psychologist Today / (by) Herbert Dörken and Associates. Jossey-Bass, 1976.

Warning: These citations may not always be 100% accurate.