Gibbons, J. D. (1993). Nonparametric statistics: An introduction. Sage.
Chicago-čujuhus (17. p.)Gibbons, Jean Dickinson. Nonparametric Statistics: An Introduction. London: Sage, 1993.
MLA-čujuhus (9. p.)Gibbons, Jean Dickinson. Nonparametric Statistics: An Introduction. Sage, 1993.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.