Wilson, G.; Gray, R.J.; Radinal, R.; Hasanuddin, H.; Azmi, W.; Sayuti, A.; Muhammad, H.; Abdullah, A.; Nazamuddin, B.S.; Sofyan, H.; Riddle, H.S.; Stremme, C. & Desai, A.A.. (2021). "Between a rock and a hard place: rugged terrain features and human disturbance affect behaviour and habitat use of Sumatran elephants in Aceh, Sumatra, Indonesia". Biodiversity and Conservation. 30 (3): 597–618. Bibcode:2021BiCon..30..597W. doi:10.1007/s10531-020-02105-3. S2CID234345462.
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Wilson, G.; Gray, R.J.; Radinal, R.; Hasanuddin, H.; Azmi, W.; Sayuti, A.; Muhammad, H.; Abdullah, A.; Nazamuddin, B.S.; Sofyan, H.; Riddle, H.S.; Stremme, C. & Desai, A.A.. (2021). "Between a rock and a hard place: rugged terrain features and human disturbance affect behaviour and habitat use of Sumatran elephants in Aceh, Sumatra, Indonesia". Biodiversity and Conservation. 30 (3): 597–618. Bibcode:2021BiCon..30..597W. doi:10.1007/s10531-020-02105-3. S2CID234345462.
Wilson, G.; Gray, R.J.; Radinal, R.; Hasanuddin, H.; Azmi, W.; Sayuti, A.; Muhammad, H.; Abdullah, A.; Nazamuddin, B.S.; Sofyan, H.; Riddle, H.S.; Stremme, C. & Desai, A.A.. (2021). "Between a rock and a hard place: rugged terrain features and human disturbance affect behaviour and habitat use of Sumatran elephants in Aceh, Sumatra, Indonesia". Biodiversity and Conservation. 30 (3): 597–618. Bibcode:2021BiCon..30..597W. doi:10.1007/s10531-020-02105-3. S2CID234345462.