Sarwar, A.K.M. Golam, and Hideki Takahashi. 2009. “Pollen Morphology and Systematics in Two Subfamilies of Ericaceae: Cassiopoideae and Harrimanelloideae”. Bangladesh Journal of Plant Taxonomy 16 (1):37-46. https://doi.org/10.3329/bjpt.v16i1.2745.