Gaya APA

SIEGEL, S., CASTELLAN, N, J. (2021). Nonparametric Statist (Ed.2 ). : McGRAW-HILL Book Company.

Gaya MLA

SIEGEL, Sidney., CASTELLAN, N., JOHN. "Nonparametric Statist". Ed.2 : McGRAW-HILL Book Company, 2021. Text.