APA-čujuhus (7. p.)
Bustad, L. K. (1980). Animals, aging, and the aged. University of Minnesota Press.
Chicago-čujuhus (17. p.)
Bustad, Leo K. Animals, Aging, and the Aged. Minneapolis: University of Minnesota Press, 1980.
MLA-čujuhus (9. p.)
Bustad, Leo K. Animals, Aging, and the Aged. University of Minnesota Press, 1980.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.