Suchart Sa-nguanphan. “Effects of Pandanus Amaryllifolius Roxb. Supplementation on Egg Production Performance and Egg Quality Under Different Housing Systems”. Agriculture and Natural Resources, vol. 44, no. 2, Apr. 2010, pp. 191-5, https://li01.tci-thaijo.org/index.php/anres/article/view/244905.