Alderson, M. (1983). An Introduction to Epidemiology.
Chicago-čujuhus (17. p.)Alderson, Michael. An Introduction to Epidemiology. 1983.
MLA-čujuhus (9. p.)Alderson, Michael. An Introduction to Epidemiology. 1983.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.