Virtual
 Buku Teks
Virtual futures
edited by Joan Broadhurst Dixon and Eric J. Cassidy
Routledge, 1998
 Buku Teks
Mpshkovitz, Moshe
The virtual studio
Focal Press, 2000
 Buku Teks
Fatthan Sinergy
Agensi visa virtual = Virtual visa agency
Fakultas Teknik Universitas Indonesia, 2012
 UI - Skripsi Membership
Fuller, Robert
HTML virtual classroom
McGraw-Hill , 2002
 Buku Teks