Citazione APA

Pophan, W. J., & Sirotinik, K. A. (1973). Educational statistics: Use and intepretation (2nd. ed.). Harper & Row.

Stile di citazione Chicago

Pophan, W. James, e Kenneth A. Sirotinik. Educational Statistics: Use and Intepretation. 2nd. ed. New York: Harper & Row, 1973.

Citazione MLA

Pophan, W. James, e Kenneth A. Sirotinik. Educational Statistics: Use and Intepretation. 2nd. ed. Harper & Row, 1973.