APA

Graff L. A., Vincent N., Walker J. R., Clara I., Carr R., Ediger J., Miller N., Rogala L., Rawsthorne P., Lix L. & Bernstein C. N. (20111220). A population-based study of fatigue and sleep difficulties in inflammatory bowel disease. : Inflammatory bowel diseases.

Chicago

Graff Lesley A, Vincent Norah, Walker John R, Clara Ian, Carr Rachel, Ediger Jason, Miller Norine, Rogala Linda, Rawsthorne Patricia, Lix Lisa and Bernstein Charles N. 20111220. A population-based study of fatigue and sleep difficulties in inflammatory bowel disease. : Inflammatory bowel diseases.

Harvard

Graff L. A., Vincent N., Walker J. R., Clara I., Carr R., Ediger J., Miller N., Rogala L., Rawsthorne P., Lix L. and Bernstein C. N. (20111220). A population-based study of fatigue and sleep difficulties in inflammatory bowel disease. : Inflammatory bowel diseases.

MLA

Graff Lesley A, Vincent Norah, Walker John R, Clara Ian, Carr Rachel, Ediger Jason, Miller Norine, Rogala Linda, Rawsthorne Patricia, Lix Lisa and Bernstein Charles N. A population-based study of fatigue and sleep difficulties in inflammatory bowel disease. : Inflammatory bowel diseases. 20111220.