APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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