Renwick, S. P. SPIE Security + Defence Industry Talks. SPIE Digital Library.
Chicago-čujuhus (17. p.)Renwick, Stephen P. SPIE Security + Defence Industry Talks. SPIE Digital Library.
MLA-čujuhus (9. p.)Renwick, Stephen P. SPIE Security + Defence Industry Talks. SPIE Digital Library.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.