APA (7th ed.) Citation

ScienceDirect (Online service), Nelson, D. S., & Alexander, P. (1976). Immunobiology of the macrophage. Academic Press.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), David S. Nelson, and Peter Alexander. Immunobiology of the Macrophage. New York: Academic Press, 1976.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. Immunobiology of the Macrophage. Academic Press, 1976.