APA (7th ed.) Citation

American Psychological Association & Stepanski, E. J. (2011). Problems with sustaining sleep. American Psychological Association.

Chicago Style (17th ed.) Citation

American Psychological Association and Edward J. Stepanski. Problems with Sustaining Sleep. [Washington, D.C.]: American Psychological Association, 2011.

MLA (9th ed.) Citation

American Psychological Association and Edward J. Stepanski. Problems with Sustaining Sleep. American Psychological Association, 2011.

Warning: These citations may not always be 100% accurate.