Cita APA

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

Chicago Edition Citation

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

Cita MLA

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