APA (7th ed.) Citation

ScienceDirect (Online service), Leuridan, E. E., Nunes, M. C., & Jones, C. E. (2020). Maternal immunization. Academic Press.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), Elke E. Leuridan, Marta C. Nunes, and Christine E. Jones. Maternal Immunization. [Place of publication not identified]: Academic Press, 2020.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. Maternal Immunization. Academic Press, 2020.