Hamill, Pete
Forever
Little, Brown and Company, 2003
 Buku Teks
Karp, Walter
The politics of war : the story of two wars which altered forever the political life of the American Republic (1890-1920)
Harper & Row, 1979
 Buku Teks
Steel, Danielle
Friends forever
Corgi, 2013
 Buku Teks
Stephani Zeni
A week to forever
Gramedia Pustaka Utama , 2014
 Buku Teks
Clausewitz, Carl von
On war
A Millennium Project, 1993
 Buku Referensi