Hawker, G. (1911). An Englishwoman's twenty-five years in tropical Africa: Being the biography of Gwen Elen Lewis, missionary to the Cameroons and the Congo. Hodder and Stoughton.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hawker, George. An Englishwoman's Twenty-five Years in Tropical Africa: Being the Biography of Gwen Elen Lewis, Missionary to the Cameroons and the Congo. London, New York [etc.]: Hodder and Stoughton, 1911.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Hawker, George. An Englishwoman's Twenty-five Years in Tropical Africa: Being the Biography of Gwen Elen Lewis, Missionary to the Cameroons and the Congo. Hodder and Stoughton, 1911.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.