Botha, C. G. (1916). "Some early exploring expeditions and travels in South Africa": A lecture delivered on the 31st March, 1916, at the quarterly meeting of the Mountain club. [Cape Times Ltd.].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Botha, C. Graham. "Some Early Exploring Expeditions and Travels in South Africa": A Lecture Delivered on the 31st March, 1916, at the Quarterly Meeting of the Mountain Club. [Cape Town]: [Cape Times Ltd.], 1916.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Botha, C. Graham. "Some Early Exploring Expeditions and Travels in South Africa": A Lecture Delivered on the 31st March, 1916, at the Quarterly Meeting of the Mountain Club. [Cape Times Ltd.], 1916.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.