Ohaegbulam, Festus Ogboaja
University Press of America, 1980
Buku Teks
edited and introduced by Patrick Williams and Laura Chrisman
Columbia University Press , 1994
Buku Teks
Stahl, Kathleen M.
Faber and Faber Limited, s.a.
Buku Teks
Angelino, A. D. A. De Kat
Martinus Nijhoff, 1932
Buku Teks
Denholm, David
Penguin Books, 1979
Buku Teks