Lowenthal, Max
The federal bureau of investigation
William Sloane Associates, 1950
 Buku Teks
Clawson, Marion
The Bureau of Land Management
Frederick A. Praeger, 1971
 Buku Teks SO
Wheare, K.C.
Federal government
Oxford University Press, 1963
 Buku Teks SO
Swanson, Charles R.
Criminal investigation
McGraw-Hill, 2003
 Buku Teks
Swanson, Charles R.
Criminal investigation
McGraw-Hill, 2003
 Multimedia