Märke
- Oxford University Press 3
- Taylor & Francis Inc 2
- Taylor & Francis Ltd 2
- American Psychological Association 1
- Chemical Publishing Company 1
- Pearson Education Limited 1
- Plunkett Research 1
- Springer International Publishing AG 1
- Springer Verlag, Singapore 1
- Springer-Verlag Berlin and Heidelberg GmbH & Co. KG 1