Ngah R. The Effects of Moral Norms, Social Norms and Pro-Environmental Attitude on Travel Behavior In Malaysia . E-BPJ [Internet]. 2020 July 1 [cited 2026 Oct. 30];5(14):287-91. Available from: https://ebpj.e-iph.co.uk/index.php/EBProceedings/article/view/2196