Jakkrit Singhsilarak และผู้แต่งคนอื่นๆ. (2002) A study of people's satisfaction as service recipients and police officers' job satisfaction and job performance after transformation to the Royal Thai Police. National Institute of Development Administration:ม.ป.ท.Jakkrit Singhsilarak และผู้แต่งคนอื่นๆ. 2002. A study of people's satisfaction as service recipients and police officers' job satisfaction and job performance after transformation to the Royal Thai Police. ม.ป.ท.:National Institute of Development Administration;Jakkrit Singhsilarak และผู้แต่งคนอื่นๆ. A study of people's satisfaction as service recipients and police officers' job satisfaction and job performance after transformation to the Royal Thai Police. ม.ป.ท.:National Institute of Development Administration, 2002. Print.