Swinnerton, Frank
Longman , 1961
Buku Teks
Compiled and edited by Dorothy Nyren Curley, Maurice Kramer, Elaine Fialka Kramer
Continuum, 1989
Buku Referensi
compiled by Ruth Z. Temple; edited by Martin Tucker
Frederick Ungar Publishing, 1981
Buku Referensi
edited by Charles Wells Moulton
Gloucester, 1959
Buku Referensi
Bennett, A
J.M. Dent & sons, 1954
Koleksi Publik