APA

Wakefield S. E., Wheeler D. W., Mortensen N. J. & Kettlewell M. G. (19990107). The incidence and Dukes' staging of colorectal cancer over 3 decades. : European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology.

Chicago

Wakefield S E, Wheeler D W, Mortensen N J and Kettlewell M G. 19990107. The incidence and Dukes' staging of colorectal cancer over 3 decades. : European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology.

Harvard

Wakefield S. E., Wheeler D. W., Mortensen N. J. and Kettlewell M. G. (19990107). The incidence and Dukes' staging of colorectal cancer over 3 decades. : European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology.

MLA

Wakefield S E, Wheeler D W, Mortensen N J and Kettlewell M G. The incidence and Dukes' staging of colorectal cancer over 3 decades. : European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology. 19990107.