Upsorn Sringam. 2005. The development of a clinical nursing practice guideline for pain management in patients with abdominal surgery. Bangkok:Mahidol University;
Upsorn Sringam. (2005) The development of a clinical nursing practice guideline for pain management in patients with abdominal surgery (รายงานผลงานวิจัย). Mahidol University:Bangkok.
Upsorn Sringam. The development of a clinical nursing practice guideline for pain management in patients with abdominal surgery. Bangkok:Mahidol University, 2005.
Upsorn Sringam. (2005) The development of a clinical nursing practice guideline for pain management in patients with abdominal surgery (รายงานผลงานวิจัย). Mahidol University:Bangkok.