Nantarungson Songreat. 2001. The particpation in crime prevention of the tricyclists collecting the junk [Saleng] : a case study of the tricyclists collecting the junk [saleng] in the area of Wangtonglang police station. Field of Study Criminology and Criminal Justice, Mahidol University;

Nantarungson Songreat. The particpation in crime prevention of the tricyclists collecting the junk [Saleng] : a case study of the tricyclists collecting the junk [saleng] in the area of Wangtonglang police station. . Bangkok:Mahidol University, 2001.

Nantarungson Songreat. (2001) The particpation in crime prevention of the tricyclists collecting the junk [Saleng] : a case study of the tricyclists collecting the junk [saleng] in the area of Wangtonglang police station . Mahidol University/Bangkok.