APA (7th ed.) Citation

ScienceDirect (Online service), Simon, M. I., Crane, B. R., & Crane, A. (2007). Two-component signaling systems. Elsevier/Academic Press.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), Melvin I. Simon, Brian R. Crane, and Alexandrine Crane. Two-component Signaling Systems. Amsterdam ; Boston: Elsevier/Academic Press, 2007.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. Two-component Signaling Systems. Elsevier/Academic Press, 2007.