SPECTORGROUP. (1995). Spectorgroup. Rockport.
Chicago-čujuhus (17. p.)SPECTORGROUP. Spectorgroup. Massachutsetts: Rockport, 1995.
MLA-čujuhus (9. p.)SPECTORGROUP. Spectorgroup. Rockport, 1995.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.