Hill, S. D., Ji, W., Parker, K. A., Amiot, C., Wells, S. J (2013) "A comparison of vocalisations between mainland tui (Prosthemadera novaeseelandiae novaeseelandiae) and Chatham Island tui (P. n. chathamensis)" New Zealand Journal of Ecology37(2): 214-223 [1]
Hill, S. D., Ji, W. (2013) "Microgeographic variation in song phrases of tui (Prosthemadera novaeseelandiae)" Notornis and Southern Bird: Ornithology of the Southern Pacific60(3): 262-264 [2]
Paul, R. St & H. R. McKenzie (1975) "A bushman's seventeen years of noting birds - Introduction and part A (Bellbird and Tui)" Notornis22(2): 122–130 [3]