Doe, Norman
Fundamental authority in late medieval English law
Cambridge University Press, 1990
 Buku Teks
Hodges, Luther H.
The business conscience
Prentice-Hall, 1963
 Buku Teks
Burlingame, Roger
The American conscience / Roger Burlingame
Alfred A. Knopf, 1960
 Buku Teks
Friedrich, Carl J.
Authority
Harvard University, 1958
 Buku Teks
Sennett, Richard
Authority
Alfred A. Knopf, 1980
 Buku Teks