Friedman, Milton, 1912-2006, author
The University of Chicago Press , 1953
Buku Teks
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