Kumschick, S.; Nentwig, W. (2010). “Some alien birds have as severe an impact as the most effectual alien mammals in Europe”. 《Biological Conservation》 143 (11): 2757–2762. Bibcode:2010BCons.143.2757K. doi:10.1016/j.biocon.2010.07.023.
Kumschick, S.; Nentwig, W. (2010). “Some alien birds have as severe an impact as the most effectual alien mammals in Europe”. 《Biological Conservation》 143 (11): 2757–2762. Bibcode:2010BCons.143.2757K. doi:10.1016/j.biocon.2010.07.023.
“Threskiornis aethiopicus”. United Nations Environment Programme (UNEP), Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA). 2018년 3월 29일에 확인함.