HOOGERWERF, A. “NOTES ON INDONESIAN BIRDS WITH SPECIAL REFERENCE TO THE AVIFAUNA OF JAVA AND THE SURROUNDING SMALL ISLANDS (III) ”. Treubia 26, no. 4 (August 29, 2016): 211–291. Accessed December 6, 2025. https://ejournal.brin.go.id/treubia/article/view/10167.