APA (7th ed.) Citation

ScienceDirect (Online service), Kryger, M. H., Roth, T., & Dement, W. C. (2011). Principles and practice of sleep medicine (5th ed.). Saunders/Elsevier.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), Meir H. Kryger, T. Roth, and William C. Dement. Principles and Practice of Sleep Medicine. 5th ed. Philadelphia, PA: Saunders/Elsevier, 2011.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. Principles and Practice of Sleep Medicine. 5th ed. Saunders/Elsevier, 2011.