Kenyatta, Jomo
Vintage Books, 1962
Buku Teks
Thurnwald, Richard C.
George Routledge and Sons, 1935
Buku Teks
Henderson, Ian, author
Doubleday, 1958
Buku Teks
Seligman, C.G., author
Thornton Butterworth, 1939
Buku Teks
Rayner, William, author
Frederick A. Praeger, 1962
Buku Teks