Che Ani, Asniamira and Razalli, Mohd Rizal (2012) The level satisfaction of bus services and traffic congestion in Sungai Petani, Kedah towards sustainability. In: Simposium Pengurusan Teknologi, Operasi & Logistik (SIPTIK III), 11-12 Disember 2012, Universiti Utara Malaysia.