Ahmad Mahyadin@Mahidin, Fariza and Saad, Rohaizah and Asaad, Mohd Norhasni and Iteng, Rosman (2022) Practiced of 5S Concepts at Sultan Abdul Halim Airport, Alor Setar, Kedah Darul Aman. In: 7th International Case Study Conference, 13 - 15 September 2022, Raia Hotel & Convention Centre, Terengganu, Malaysia.