APA (7th ed.) Citation

ebrary, Inc, Brunt, L., & Steger, B. (2008). Worlds of sleep. Frank & Timme.

Chicago Style (17th ed.) Citation

ebrary, Inc, Lodewijk Brunt, and Brigitte Steger. Worlds of Sleep. Berlin: Frank & Timme, 2008.

MLA (9th ed.) Citation

ebrary, Inc, et al. Worlds of Sleep. Frank & Timme, 2008.