Margetts, B. M., & Nelson, M. (1991). Design concepts in nutritional epidemiology. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Margetts, Barrie M., agus Michael Nelson. Design Concepts in Nutritional Epidemiology. Oxford, Eng.: Oxford University Press, 1991.
Lua MLA (9ú heag.)Margetts, Barrie M., agus Michael Nelson. Design Concepts in Nutritional Epidemiology. Oxford University Press, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.