Penerbitan Berimpak Tinggi

irina safitri zen , chamhuri siwar.  (2015).  an analysis of household acceptance of curbside recycling scheme in kuala lumpur, malaysia..  - habitat international.  248-255. 

mcmurray a.j., islam m.m., siwar c., fien j..  (2014).  sustainable procurement in malaysian organizations: practices, barriers and opportunities.  - journal of purchasing and supply management.  195 - 207.