Ziemainz, H., Neumann, G., Rasche, F., Gelius, P., & Stemmler, M. (2009). The application of psychological assessment methods in sport psychology in Germany. Sport science review, 18(3), S. 27-41.

Ziemainz, Heiko, Gabriele Neumann, Friederike Rasche, Peter Gelius, and Marc Stemmler. "The Application of Psychological Assessment Methods in Sport Psychology in Germany." Sport Science Review 18, no. 3 (2009): S. 27-41.

Ziemainz, Heiko, et al. "The Application of Psychological Assessment Methods in Sport Psychology in Germany." Sport Science Review 18.3 (2009): S. 27-41.