Παραπομπή APA

Gibbons, J. D. (1993). Nonparametric statistics: An introduction. Sage.

Παραπομπή Chicago Style

Gibbons, Jean Dickinson. Nonparametric Statistics: An Introduction. Newbury Park: Sage, 1993.

Παραπομπή MLA

Gibbons, Jean Dickinson. Nonparametric Statistics: An Introduction. Sage, 1993.