Silbermaan, Charles E., author
Random House, 1978
Buku Teks
Wright, Burton, author
W.B. Saunders, 1978
Buku Teks
Turner, J. W. Cecil
At The University Press, 1952
Buku Teks
Bloch, Herbert A., author
Random House, 1962
Buku Teks
Alfred A. Knopf, 1974
Buku Teks