Cita APA (7a ed.)

Steffen, R., Foguet, P., Krikler, S., Gundle, R., Beard, D., & Murray, D. (2009). Femoral neck fractures after hip resurfacing.

Cita Chicago Style (17a ed.)

Steffen, RT, P. Foguet, S. Krikler, R. Gundle, D. Beard, y D. Murray. Femoral Neck Fractures After Hip Resurfacing. 2009.

Cita MLA (9a ed.)

Steffen, RT, et al. Femoral Neck Fractures After Hip Resurfacing. 2009.