Sa-ar, I., & Tonsakulrungruang, K. (2016). Plumage-types of the Little-known Scarlet-breasted Flowerpecker Prionochilus thoracicus (Aves: Passeriformes: Dicaeidae). The Thailand Natural History Museum Journal, 10(2), 125–129. retrieved from https://li05.tci-thaijo.org/index.php/thnhmj/article/view/1841