Cita APA

Feldman, U., Swartz, M., & Cohen, L. (1967). Vacuum Ultraviolet Source.

Citación estilo Chicago

Feldman, U., M. Swartz, and Leonard Cohen. Vacuum Ultraviolet Source. 1967.

Cita MLA

Feldman, U., et al. Vacuum Ultraviolet Source. 1967.