Nicole Anne Bass Monsanto และ Donn Pjongluck. (2015) The key to the success of hotel loyalty program enroliments: an assessment of the best practices within the three hospitality tiers. Stamford Internatioanl University:ม.ป.ท.Nicole Anne Bass Monsanto และ Donn Pjongluck. 2015. The key to the success of hotel loyalty program enroliments: an assessment of the best practices within the three hospitality tiers. ม.ป.ท.:Stamford Internatioanl University;Nicole Anne Bass Monsanto และ Donn Pjongluck. The key to the success of hotel loyalty program enroliments: an assessment of the best practices within the three hospitality tiers. ม.ป.ท.:Stamford Internatioanl University, 2015. Print.