Cita APA (7a ed.)

Sayer, A., Cooper, C., Osmond, C., Barker, D., Evans, J., Rauf, A., & Wormald, R. (1999). Are rates of ageing determined in utero? Reply.

Cita Chicago Style (17a ed.)

Sayer, A., C. Cooper, C. Osmond, D. Barker, J. Evans, A. Rauf, y R. Wormald. Are Rates of Ageing Determined in Utero? Reply. 1999.

Cita MLA (9a ed.)

Sayer, A., et al. Are Rates of Ageing Determined in Utero? Reply. 1999.