Stephens, P., d'Sa, C., Sillero-Zubiri, C., & Leader-Williams, N. (2001). Impact of livestock and settlement on the large mammalian wildlife of Bale Mountains National Park, southern Ethiopia.

Stephens, P., C. d'Sa, C. Sillero-Zubiri, and N. Leader-Williams. Impact of Livestock and Settlement on the Large Mammalian Wildlife of Bale Mountains National Park, Southern Ethiopia. 2001.

Stephens, P., et al. Impact of Livestock and Settlement on the Large Mammalian Wildlife of Bale Mountains National Park, Southern Ethiopia. 2001.