Cita APA (7a ed.)

Barrow, J., Ferreira, P., & Silk, J. (1997). Constraints on a Primordial Magnetic Field.

Cita Chicago Style (17a ed.)

Barrow, J., P. Ferreira, y J. Silk. Constraints on a Primordial Magnetic Field. 1997.

Cita MLA (9a ed.)

Barrow, J., et al. Constraints on a Primordial Magnetic Field. 1997.