Cita APA (7a ed.)

Muriel, H., Nicotra, M., García-Lambas, D., & Ruiz, L. (1990). Alignment effects in clusters of galaxies.

Cita Chicago Style (17a ed.)

Muriel, H., M. Nicotra, D. García-Lambas, y L. Ruiz. Alignment Effects in Clusters of Galaxies. 1990.

Cita MLA (8a ed.)

Muriel, H., et al. Alignment Effects in Clusters of Galaxies. 1990.