Cita APA (7a ed.)

Armstrong, M., Spencer, E., Cairns, B., Banks, E., Pirie, K., Green, J., . . . Beral, V. (2011). Body mass index and physical activity in relation to the incidence of hip fracture in postmenopausal women.

Cita Chicago Style (17a ed.)

Armstrong, M., E. Spencer, B. Cairns, E. Banks, K. Pirie, J. Green, F. Wright, G. Reeves, y V. Beral. Body Mass Index and Physical Activity in Relation to the Incidence of Hip Fracture in Postmenopausal Women. 2011.

Cita MLA (9a ed.)

Armstrong, M., et al. Body Mass Index and Physical Activity in Relation to the Incidence of Hip Fracture in Postmenopausal Women. 2011.