al.], N. H. N. [. (1975). Statistical Package for the social science. European university studies.
Chicago Style Citational.], Norman H. Nie... [et. Statistical Package for the Social Science. European university studies, 1975.
MLA Citational.], Norman H. Nie... [et. Statistical Package for the Social Science. European university studies, 1975.
Warning: These citations may not always be 100% accurate.