Hays, W. L. (1973). Statistics for the social sciences (2nd ed.). New York: Holt, Rinehart and Winston.
Чикагска система за цитиранеHays, William Lee. Statistics for the Social Sciences. 2nd ed. New York: Holt, Rinehart and Winston, 1973.
MLA формат за цитиранеHays, William Lee. Statistics for the Social Sciences. 2nd ed. New York: Holt, Rinehart and Winston, 1973.
Внимание: Тези цитати може да не са 100% точни.