NGAMRIABSAKUL, Chatchai. 2011. “Morphological Study of the Versatile Anther Group in the Tribe Zingibereae (Zingiberaceae)”. Walailak Journal of Science and Technology (WJST) 2 (1):11-21. https://wjst.wu.ac.th/index.php/wjst/article/view/171.