Besi, E. E.; Jia, L. S.; Mustafa, M.;  Yong, C. S. Y.; Go, R. Comparative Floral Surface Micromorphology Helps to Discriminate Between Species of <i>Paphiopedilum</i≫ (Orchidaceae: Cypripedioideae) from Peninsular Malaysia. LIJO 2021, 21, 17–31.