APA-referens (7:e uppl.)

Feinstein, L. B., Holman, R. C., Christensen, K. L. Y., Steiner, C. A., & Swerdlow, D. L. (2010). Trends in Hospitalizations for Peptic Ulcer Disease, United States, 1998–2005. Centers for Disease Control and Prevention.

Chicago-referens (17:e uppl.)

Feinstein, Lydia B., Robert C. Holman, Krista L. Yorita Christensen, Claudia A. Steiner, och David L. Swerdlow. Trends in Hospitalizations for Peptic Ulcer Disease, United States, 1998–2005. Centers for Disease Control and Prevention, 2010.

MLA-referens (9:e uppl.)

Feinstein, Lydia B., et al. Trends in Hospitalizations for Peptic Ulcer Disease, United States, 1998–2005. Centers for Disease Control and Prevention, 2010.