Citação norma APA

Houghton, L. A., Lea, R., Jackson, N., & Whorwell, P. J. (2002). The menstrual cycle affects rectal sensitivity in patients with irritable bowel syndrome but not healthy volunteers. Copyright 2002 by Gut.

Citação norma Chicago

Houghton, L A., R. Lea, N. Jackson, and P J. Whorwell. The Menstrual Cycle Affects Rectal Sensitivity in Patients With Irritable Bowel Syndrome but Not Healthy Volunteers. Copyright 2002 by Gut, 2002.

Citação norma MLA

Houghton, L A., R. Lea, N. Jackson, and P J. Whorwell. The Menstrual Cycle Affects Rectal Sensitivity in Patients With Irritable Bowel Syndrome but Not Healthy Volunteers. Copyright 2002 by Gut, 2002.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.