edited by Benyamin Haggott Beckhart
Columbia Universary Press, 1954, 1956
Buku Teks
Holden, J. Milnes
Sir Isaac Pitman & Sons, 1960
Buku Teks
Lewis, Mervyn Keith
Philip Allan , 1987
Buku Teks
Sayers, R.S.
Clarendon Press, 1958
Buku Teks
Halm, George N.
Richard D. Irwin, 1956
Buku Teks