1. http://public.tableau.com/profile/maria4923#!/vizhome/Universityrankingdifferencevisualization-v2-3/Universityrankinganalysis
2. https://github.com/YuanyuanZh/WorldUniversityRankings
3. https://wiki.smu.edu.sg/1516t1isss608g1/ISSS608_2015_16T1_Group8_Proposal