APA (7th ed.) Citation

ScienceDirect (Online service), Ehlers, J., Gibbard, P. L., & Hughes, P. D. (2011). Quaternary glaciations-- Extent and chronology: A closer look. Elsevier.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), Jürgen Ehlers, Philip L. Gibbard, and Philip D. Hughes. Quaternary Glaciations-- Extent and Chronology: A Closer Look. Amsterdam ; Boston: Elsevier, 2011.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. Quaternary Glaciations-- Extent and Chronology: A Closer Look. Elsevier, 2011.