Hicks, John R., author
The Clarendon Press, 1952
Buku Teks
Becker, William E., author
Prentice-Hall, 1971
Buku Teks
Hicks, John R., author
Oxford University Press, 1975
Buku Teks
Reynolds, Lloyd G., author
Richard D. Irwin, 1966
Buku Teks
Reynolds, Lloyd G., author
Richard D. Irwin, 1966
Buku Teks