APA (7th ed.) Citation

ScienceDirect (Online service), Langone, J. J., & Van Vunakis, H. (1981). Immunochemical techniques. Academic Press.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), John J. Langone, and Helen Van Vunakis. Immunochemical Techniques. New York: Academic Press, 1981.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. Immunochemical Techniques. Academic Press, 1981.