HOOGERWERF, A. “NOTES ON INDONESIAN BIRDS WITH SPECIAL REFERENCE TO THE AVIFAUNA OF JAVA AND THE SURROUNDING SMALL ISLANDS (II) ”. Treubia 26, no. 2 (August 19, 2016): 133–137. Accessed December 6, 2025. https://ejournal.brin.go.id/treubia/article/view/10163.