Moorhouse, Frank
Angus & Robertso, 1978
Buku Teks
Ringwood:Penguin Books, 1988
Buku Teks
Church Missionary Society, 1937
Buku Teks
Wooffitt, Robin, author
Harvester Wheatsheaf , 1992
Buku Teks
edited by Thomas H Briggs, Max J. Herzberg, Emma Miller Bolenius
Mifflin , 1932
Buku Teks