Faith, Nicholas
The Infiltrators the European business invasion of America
Hamish Hamilton, 1971
 Buku Teks SO
Burke, Anthony
Fear of security: Australia's invasion anxiety
Cambridge University Press, 2008
 eBooks
Clarke, Arthur C.
The Other side of the sky
VGSF, 1987
 Buku Teks
Lee, Kyun-young
The Other Side of dark remembrance
Jimoondang Publishing Company, 2001
 Buku Teks
Datin Seri Shuryani Datuk Shuaib
The Other Side of the World
Yayasan Semporna, 2011
 Buku Referensi