Davies, Hugh Sykes
Hutchinson, 1966
Buku Teks
Artikel Jurnal
edited by Alan S. Downer
University of Chicago Press, 1965
Buku Teks
edited by A.M. Eastman and G.B. Harrison
University of Michigan Press, 1964
Buku Teks
Row, Peterson, 1962
Koleksi Publik