Cita APA (7th ed.)

Hadidi, A., Flores, R., Randles, J. W., & Semancik, J. S. (2003). Viroids. Science.

Cita Chicago (17th ed.)

Hadidi, Ahmed, Ricardo Flores, John W. Randles, i Joseph S. Semancik. Viroids. Lebanon: Science, 2003.

Cita MLA (9th ed.)

Hadidi, Ahmed, et al. Viroids. Science, 2003.