Matthias Helble and Kwan Ok Lee (2021), ""Housing Affordability ad Adequacy in Developing Asia" in Creating Livable Asian Cities " , with Matthias Helble, Asian Development Bank

Tien Foo Sing, Sumit Agarwal and Ang Swee Hoon (2020), "Kiasunomics 2: Economic Insights for Everyday Life" , 2nd, World Scientific