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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Stephens, P., C. d'Sa, C. Sillero-Zubiri, و N. Leader-Williams. Impact of Livestock and Settlement on the Large Mammalian Wildlife of Bale Mountains National Park, Southern Ethiopia. 2001.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Stephens, P., et al. Impact of Livestock and Settlement on the Large Mammalian Wildlife of Bale Mountains National Park, Southern Ethiopia. 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.