Cita APA (7th 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 (17th ed.)

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

Cita MLA (9th ed.)

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