APA (7th ed.) Citation

Hanner, L., Witek, J. J., & Clift, R. B. (1991). When you're sick and don't know why: Coping with your undiagnosed illness. DCI Publ.

Chicago Style (17th ed.) Citation

Hanner, Linda, John J. Witek, and Robert B. Clift. When You're Sick and Don't Know Why: Coping with Your Undiagnosed Illness. Minneapolis, MN: DCI Publ, 1991.

MLA (9th ed.) Citation

Hanner, Linda, et al. When You're Sick and Don't Know Why: Coping with Your Undiagnosed Illness. DCI Publ, 1991.