APA

(1997). Bertelsmann Lexikon Geschichte [CD ROM]. : Bertelsmann Electronic Publishing.

Chicago

1997. Bertelsmann Lexikon Geschichte [CD ROM]. : Bertelsmann Electronic Publishing.

Harvard

(1997). Bertelsmann Lexikon Geschichte [CD ROM]. : Bertelsmann Electronic Publishing.

MLA

Bertelsmann Lexikon Geschichte [CD ROM]. : Bertelsmann Electronic Publishing. 1997.