Henige, David (1980). "'Companies Are Always Ungrateful': James Phipps of Cape Coast, a Victim of the African Trade". African Economic History. 9 (9): 27–47. doi:10.2307/3601386. JSTOR3601386.
Henige, David (1980). "'Companies Are Always Ungrateful': James Phipps of Cape Coast, a Victim of the African Trade". African Economic History. 9 (9): 27–47. doi:10.2307/3601386. JSTOR3601386.