Chia, Noel Kok Hwee, et al. “An Investigation on the Effectiveness of ‘Dolphin Encounter for Special Children’ (DESC) Program for Children With Autism Spectrum Disorders”. Journal of the American Academy of Special Education Professionals, vol. 4, no. 3, Oct. 2009, pp. 57-87, https://doi.org/10.64546/jaasep.85.