The Viking Press, 1969
Buku Teks
Dodd, Mead & Company, 1956
Buku Referensi
Barzun, Jacques, editor
Harcourt, Brace & World, 1970
Buku Teks
Steven, Laurence, author
Prentice-Hall, 1999
Buku Teks
Chesterton, G. K. (Gilbert Keith), 1874-1936, author
Devin-Adair , 1950
Buku Teks