Vintage Books, 1967
Buku Teks
Harris, Joseph P.
The Brookings Institution, 1964
Buku Teks
Rosenbloom, David H., author
McGraw-Hill International, 2005
Buku Teks
Rosenbloom, David H., author
McGraw Hil, 2015
Buku Teks
Rosenbloom, David H., author
McGraw-Hill Education, 2015
Buku Teks