Walker, H. M., & Lev, J. (1958). Elementary statistical methods. Oxford and IBH.
Čikaški stil citiranjaWalker, Helen M., i Joseph Lev. Elementary Statistical Methods. New Delhi: Oxford and IBH, 1958.
MLA način citiranjaWalker, Helen M., i Joseph Lev. Elementary Statistical Methods. Oxford and IBH, 1958.
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