APA (7th ed.) Citation

ScienceDirect (Online service), Kryger, M. H., Roth, T., & Dement, W. C. (2005). Principles and practice of sleep medicine (4th ed.). Elsevier/Saunders.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), Meir H. Kryger, T. Roth, and William C. Dement. Principles and Practice of Sleep Medicine. 4th ed. Philadelphia, PA: Elsevier/Saunders, 2005.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. Principles and Practice of Sleep Medicine. 4th ed. Elsevier/Saunders, 2005.