Claquin, P., Reynolds, J., & Marsh, D. (1993). Surveillance of morbidity and mortality: Module 4 user's guide. Aga Khan Foundation.

Claquin, Pierre, Jack Reynolds, and David Marsh. Surveillance of Morbidity and Mortality: Module 4 User's Guide. Washington D.C.: Aga Khan Foundation, 1993.

Claquin, Pierre, et al. Surveillance of Morbidity and Mortality: Module 4 User's Guide. Aga Khan Foundation, 1993.