APA-referens (7:e uppl.)

Travis, R., Allen, N., Appleby, P., Spencer, E., Roddam, A., & Key, T. (2008). A prospective study of vegetarianism and isoflavone intake in relation to breast cancer risk in British women.

Chicago-referens (17:e uppl.)

Travis, R., N. Allen, P. Appleby, E. Spencer, A. Roddam, och T. Key. A Prospective Study of Vegetarianism and Isoflavone Intake in Relation to Breast Cancer Risk in British Women. 2008.

MLA-referens (9:e uppl.)

Travis, R., et al. A Prospective Study of Vegetarianism and Isoflavone Intake in Relation to Breast Cancer Risk in British Women. 2008.