Verbeek, J., de Boer, A. G., van der Weide, W. E., Piirainen, H., Anema, J., van Amstel, R. J., & Hartog, F. (2005). Patient satisfaction with occupational health physicians, development of a questionnaire. BMJ Group.

Verbeek, J., A G. de Boer, W E. van der Weide, H. Piirainen, J. Anema, R J. van Amstel, và F. Hartog. Patient Satisfaction With Occupational Health Physicians, Development of a Questionnaire. BMJ Group, 2005.

Verbeek, J., et al. Patient Satisfaction With Occupational Health Physicians, Development of a Questionnaire. BMJ Group, 2005.