Brewster, Arthur Judson
McGraw-Hill, 1947
Buku Teks
Brewster, Arthur Judson
McGraw-Hill, 1954
Buku Teks
Harris, Ralph
Institute of Economic Affairs, 1959
Buku Teks
Hotchkiss, George Burton, author
Alexander Hamilton Institute , 1961
Buku Teks
Wells, William D., author
Prentice-Hall, 2000
Buku Teks