Williams, S. (1857). Four years in Liberia: A sketch of the life of the Rev. Samuel Williams, with remarks on the missions, manners and customs of the natives of western Africa : together with an answer to Nesbit's book. Philadelphia: King & Baird, printers.

Williams, Samuel. Four Years in Liberia: A Sketch of the Life of the Rev. Samuel Williams, With Remarks On the Missions, Manners and Customs of the Natives of Western Africa : Together With an Answer to Nesbit's Book. Philadelphia: King & Baird, printers, 1857.

Williams, Samuel. Four Years in Liberia: A Sketch of the Life of the Rev. Samuel Williams, With Remarks On the Missions, Manners and Customs of the Natives of Western Africa : Together With an Answer to Nesbit's Book. Philadelphia: King & Baird, printers, 1857.