BEMMEL, A. C. V. VAN, and K. H VOOS. “ON THE BIRDS OF THE ISLANDS OF MUNA AND BUTON S.E CELEBES”. Treubia 21, no. 1 (July 22, 2016): 27–104. Accessed December 6, 2025. https://ejournal.brin.go.id/treubia/article/view/10090.