APA-Zitierstil (7. Ausg.)

Thorpy, M. J. (2001). The encyclopedia of sleep and sleep disorders (2. ed., updated and rev.). Facts On File.

Chicago-Zitierstil (17. Ausg.)

Thorpy, Michael J. The Encyclopedia of Sleep and Sleep Disorders. 2. ed., updated and rev. New York: Facts On File, 2001.

MLA-Zitierstil (9. Ausg.)

Thorpy, Michael J. The Encyclopedia of Sleep and Sleep Disorders. 2. ed., updated and rev. Facts On File, 2001.