Cita APA (7a ed.)

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.

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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