Henninger. Tony Oliva. University of Minnesota Press.
Chicago-čujuhus (17. p.)Henninger. Tony Oliva. University of Minnesota Press.
MLA-čujuhus (9. p.)Henninger. Tony Oliva. University of Minnesota Press.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.