(1991). Fundamental algorithms for permutation groups / G. Butler.
Chicago-čujuhus (17. p.)Fundamental Algorithms for Permutation Groups / G. Butler. 1991.
MLA-čujuhus (9. p.)Fundamental Algorithms for Permutation Groups / G. Butler. 1991.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.