Quellverzeichnis

Online-Shops

amazon.de
amazon.com
barnesandnoble.com
BOL
buch.de
buecher.de
Booxtra
Dell Computer
express.com
Lehmanns
Libri
Libro
Teestube

Kreditkarten

Mastercard / Europay
VISA
Diners

Weiters

profil 22/2000, p. 86ff.