Seefeldt, Jurgen
Portals to the past and to the future: libraries in Germany
georg Olms Verlag, 2007
 Buku Teks SO
Portals: people, processes and technology
edited by Andrew Cox
Facet, 2006
 Buku Teks
Dokmaisot
A scret past
Southeart Asia Program, 1992
 Buku Teks
Proust, Marcel
The Past recaptured
A Division of Random House, 1970
 Buku Teks
McNeill, William H.
Past and future
Unoiversity Of Chicago, 1954
 Buku Teks