APA

Upton G., Cook I., . (1996). Understanding statistics. Oxford: Oxford University Press.

Chicago

Upton Graham, Cook Ian, . 1996. Understanding statistics. Oxford: Oxford University Press.

Harvard

Upton G., Cook I., . (1996). Understanding statistics. Oxford: Oxford University Press.

MLA

Upton Graham, Cook Ian, . Understanding statistics. Oxford: Oxford University Press. 1996.