Bird diversity in the forests and coconut farms of Sulawesi, Indonesia oleh Nurul L. Winarni, Simon L. Mitchell, Bhisma G. Anugra, Nicolas J. Deere, Khaleb Yordan, Boas Immanuel, Zuliyanto Zakaria, Muhajir A.W. Gaib, Jatna Supriatna, Matthew J. Struebig