1.
Sajap S, Mohammed Ali NA, Zhang H. Understanding Behaviour and Preference: A Study on Designing Litter Prevention Outdoor Signage. JSPS [Internet]. 2022 Jun. 27 [cited 2024 Nov. 23];10(1):50-8. Available from: https://ojs.upsi.edu.my/index.php/JSPS/article/view/7232