Izza Shazleen Abdul Aziz, Marek Kozlowski, and Mohd Shahwahid Othman. “Valuing Visitor’s Willingness to Pay to Generate Revenues for Managing Putrajaya Botanical Garden”. Journal of Advanced Research Design 52, no. 1 (September 25, 2023): 1–12. Accessed July 18, 2024. https://akademiabaru.com/submit/index.php/ard/article/view/4886.