MLA

Swinscow, Thomas Douglas Victor, and Michael J Campbell. Statistics At Square One. BMJ Publishing Group, 2002.

APA

Swinscow, T. Douglas Victor, & Campbell, M. J. (2002). Statistics at Square One. BMJ Publishing Group.

Chicago

Swinscow, Thomas Douglas Victor, and Michael J Campbell. Statistics At Square One. : BMJ Publishing Group, 2002.