Ward, A.C.
Longman, 1955
Buku Teks
edited by Peter Hunt
Oxford University Press , 1995
Buku Teks
edited by Peter Hunt
Oxford University Press, 1995
Buku Referensi
Otis, William Bradley
Barnes & Noble, 1939
Koleksi Publik
Needleman, Morris H.
Barnes & Noble, 1939
Koleksi Publik