edited by Olugbenga Adesida, Geci Karuri-Sebina, Joao Resende-Santos
Emerald, 2016
eBooks
Browne, G.S.
F.W. Chesire, 1960
Buku Teks
edited by Calvin W. Stillman
University of Chicago Press, 1955
Buku Teks
edited by Gordon Greenwood and Norman Harper
F.W. Cheshire, 1957
Buku Teks
Lovering, T.S.
Prentice-Hall, 1943
Buku Teks