Winarto, B., and F. Rachmawati. “In Vitro Propagation Protocol of Dendrobium ‘Gradita 31’ via Protocorm Like Bodies”. Science & Technology Asia, vol. 18, no. 2, Oct. 2015, pp. 54-68, https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/41148.