Henning Edward. (2009). Fast Track to security. G G Interactive.
Chicago-čujuhus (17. p.)Henning Edward. Fast Track to Security. [s.l]: G G Interactive, 2009.
MLA-čujuhus (9. p.)Henning Edward. Fast Track to Security. G G Interactive, 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.