Peters, B. Guy, author
CQ Press, , 2004
Buku Teks
Kahn, Alfred J., author
Russel Sage Foundation, 1969
Buku Teks
Lynch, Kevin, author
MIT Press, 1990
Buku Teks
Lynch, Kevin, author
MIT Press, 1990
Buku Teks
Rubin, Herbert J.
Macmillan, 1992
Buku Teks