Lyon, G. F. (1966). A narrative of travels in northern Africa, in the years 1818-1819 and 1820: Accompanied by geographical notices of Soudan and the course of the Niger. F. Cass.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Lyon, G. F. A Narrative of Travels in Northern Africa, in the Years 1818-1819 and 1820: Accompanied by Geographical Notices of Soudan and the Course of the Niger. [London]: F. Cass, 1966.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Lyon, G. F. A Narrative of Travels in Northern Africa, in the Years 1818-1819 and 1820: Accompanied by Geographical Notices of Soudan and the Course of the Niger. F. Cass, 1966.
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