Allen, W., & Thomson, T. R. H. (1968). A narrative of the expedition sent by Her Majesty's Government to the River Niger in 1841 under the command of Captain H. D. Trotter. Cass.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Allen, William, و T. R. H. Thomson. A Narrative of the Expedition Sent by Her Majesty's Government to the River Niger in 1841 Under the Command of Captain H. D. Trotter. London: Cass, 1968.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Allen, William, و T. R. H. Thomson. A Narrative of the Expedition Sent by Her Majesty's Government to the River Niger in 1841 Under the Command of Captain H. D. Trotter. Cass, 1968.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.