APA-viite (7. p.)

Espie, C., Lindsay, W., Brooks, D., Hood, E., & Turvey, T. (1989). A controlled comparative investigation of psychological treatments for chronic sleep-onset insomnia.

Chicago-viite (17. p.)

Espie, C., W. Lindsay, D. Brooks, E. Hood, ja T. Turvey. A Controlled Comparative Investigation of Psychological Treatments for Chronic Sleep-onset Insomnia. 1989.

MLA-viite (9. p.)

Espie, C., et al. A Controlled Comparative Investigation of Psychological Treatments for Chronic Sleep-onset Insomnia. 1989.