APA format:

Genetic Science Learning Center. (2022, May 12) Vaccines & Viruses. Retrieved January 31, 2023, from https://learn.genetics.utah.edu/content/vaccines

CSE format:

Vaccines & Viruses [Internet]. Salt Lake City (UT): Genetic Science Learning Center; 2022 [cited 2023 Jan 31] Available from https://learn.genetics.utah.edu/content/vaccines

Chicago format:

Genetic Science Learning Center. "Vaccines & Viruses." Learn.Genetics. May 12, 2022. Accessed January 31, 2023. https://learn.genetics.utah.edu/content/vaccines.