Tribe, Laurence H.
Abortion : the clash of absolutes /Laurence H. Tribe.
Norton, 1992
 Buku Teks
Burnison, Gary, 1961-
The twelve absolutes of leadership
McGraw-Hill, 2012
 Buku Teks
Hinde, Robert A.
Bending the rules : the flexibility of absolutes in modern life
Oxford University Press, 2008
 Buku Teks
Huntington, Samuel P.
The clash of civilizations and the remaking of world order
Simon & Schuster, c1996
 Buku Teks
Huntington, Samuel P.
The clash of civilizations and the remaking of world order
Simon and Schuster, 1997
 Buku Teks