1.
Assiddiqi Z, van Balen S, Collar NJ. Mystery flycatchers in Sumatra - Rück’s Blue-flycatcher or White-tailed Flycatcher?. KUKILA [Internet]. 2020Dec.28 [cited 2021Sep.25];23(1):19-6. Available from: http://kukila.org/index.php/KKL/article/view/613