Journal of Epidemiology and Community Health (1978). BMJ.
Chicago-čujuhus (17. p.)Journal of Epidemiology and Community Health (1978). BMJ.
MLA-čujuhus (9. p.)Journal of Epidemiology and Community Health (1978). BMJ.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.