Williams, H., Rayner, J., Williams, H. M., Lawton, A., & Allinson, C. W. (2011). Public Service Ethos: Developing a Generic Measure. Journal of Public Administration Research and Theory, 21(1), pp. 27-51. doi:10.1093/jopart/muq016

Williams, Helen, J. Rayner, H. M. Williams, A. Lawton, and C. W. Allinson. "Public Service Ethos: Developing a Generic Measure." Journal of Public Administration Research and Theory 21, no. 1 (2011): 27-51.

Williams, Helen, et al. "Public Service Ethos: Developing a Generic Measure." Journal of Public Administration Research and Theory 21.1 (2011): 27-51.