Cita APA (7th ed.)

Toyos, I. (2005). Overcoming insomnia (2005 ed.). Trident Reference Pub.

Cita Chicago (17th ed.)

Toyos, Isabel. Overcoming Insomnia. 2005 ed. Naples, FL: Trident Reference Pub, 2005.

Cita MLA (9th ed.)

Toyos, Isabel. Overcoming Insomnia. 2005 ed. Trident Reference Pub, 2005.