APA (7th ed.) Citation

V. I. , C., & Yu. Z. , G. Reactivation between Variola, Vaccinia and Ectromelia Viruses.

Chicago Style (17th ed.) Citation

V. I. , CHERNOS, and GHENDON Yu. Z. Reactivation Between Variola, Vaccinia and Ectromelia Viruses.

MLA (9th ed.) Citation

V. I. , CHERNOS, and GHENDON Yu. Z. Reactivation Between Variola, Vaccinia and Ectromelia Viruses.

Warning: These citations may not always be 100% accurate.