Buku Teks
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