Ahmad, Mohammad Firdaus, et al. “Philanthropic Behaviour: Intention of University Teknologi MARA Alumni to Contribute to the Higher Education Institution Waqf Fund”. Research and Innovation in Technical and Vocational Education and Training, vol. 3, no. 2, Dec. 2023, pp. 176-90, https://publisher.uthm.edu.my/periodicals/index.php/ritvet/article/view/9758.