Cita APA

Ball, A. D., & Buckwell, G. D. (1991). Statistics A Level (2nd ed.). Macmillan.

Chicago Edition Citation

Ball, A D., i G D. Buckwell. Statistics A Level. 2nd ed. London: Macmillan, 1991.

Cita MLA

Ball, A D., i G D. Buckwell. Statistics A Level. 2nd ed. Macmillan, 1991.