Li, Tsung-Hsien, Evonne Lim, I-Chun Chen, Chuen-Fu Lin, Shih-Chu Chen, and Ming-An Tsai. “Environmental Enrichment and the Behavioral Effects on Captive Beluga Whales (Delphinapterus Leucas)”. The Thai Journal of Veterinary Medicine 52, no. 3 (September 5, 2022): 559–565. Accessed April 25, 2024. https://he01.tci-thaijo.org/index.php/tjvm/article/view/258654.