Heng, Siok Tian | Contouring, Singapore: Landmark Books, 2004, Print. November 4, 2013 Heng, Siok Tian | Contouring, Singapore: Landmark Books, 2004, Print. November 4, 2013 Heng, Siok Tian | Contouring, Singapore: Landmark Books, 2004, Print.
