Blum, A. (2012). Tubes: Behind the scenes at the Internet (NA.). Penguin Books.
Chicago-čujuhus (17. p.)Blum, Andrew. Tubes: Behind the Scenes at the Internet. NA. New York: Penguin Books, 2012.
MLA-čujuhus (9. p.)Blum, Andrew. Tubes: Behind the Scenes at the Internet. NA. Penguin Books, 2012.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.