Howard, E. J. (1986). Health risks. The Body Press.
Chicago-čujuhus (17. p.)Howard, Elliot J. Health Risks. The Body Press, 1986.
MLA-čujuhus (9. p.)Howard, Elliot J. Health Risks. The Body Press, 1986.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.