APA (7th ed.) Citation

ScienceDirect (Online service), Foltz, K. R., & Hamdoun, A. (2019). Echinoderms. Elsevier Ltd. : Academic Press.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), Kathy R. Foltz, and Amro Hamdoun. Echinoderms. Cambridge, MA: Elsevier Ltd. : Academic Press, 2019.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. Echinoderms. Elsevier Ltd. : Academic Press, 2019.