Cita APA (7th ed.)

Boutron, I., Ravaud, P., & Altman, D. (2010). In reply.

Cita Chicago (17th ed.)

Boutron, I., P. Ravaud, i D. Altman. In Reply. 2010.

Cita MLA (9th ed.)

Boutron, I., et al. In Reply. 2010.