Freund, J. E. (1960). Modern elementary statistics (2d ed.). Prentice-Hall.
Chicago-čujuhus (17. p.)Freund, John E. Modern Elementary Statistics. 2d ed. Englewood Cliffs, N.J.: Prentice-Hall, 1960.
MLA-čujuhus (9. p.)Freund, John E. Modern Elementary Statistics. 2d ed. Prentice-Hall, 1960.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.