APA (7th ed.) Citation

ScienceDirect (Online service), Tittiger, C., & Blomquist, G. J. (2016). Pine bark beetles. Academic Press is an imprint of Elsevier.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), Claus Tittiger, and Gary J. Blomquist. Pine Bark Beetles. London, UK: Academic Press is an imprint of Elsevier, 2016.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. Pine Bark Beetles. Academic Press is an imprint of Elsevier, 2016.