↑Pikobet nganggit: Tag <ref> tidak sah;
tidak ditemukan teks untuk ref bernama Ksepka
↑Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (2023). "Kagu, Sunbittern, tropicbirds, loons, penguins". World Bird List Version 13.1. International Ornithologists' Union. Kaaksés 16 April 2023.
↑Cole, T.L.; Ksepka, D.T.; Mitchell, K.J.; Tennyson, A.J.; Thomas, D.B.; Pan, H.; Zhang, G.; Rawlence, N.J.; Wood, J.R.; Bover, P.; Bouzat, J.L. (2019). "Mitogenomes uncover extinct penguin taxa and reveal island formation as a key driver of speciation". Molecular Biology and Evolution. 36 (4): 784–797. doi:10.1093/molbev/msz017. PMID30722030.