Dyfyniad APA

Bustad, L. K. (1980). Animals, aging, and the aged. University of Minnesota Press.

Dyfyniad Arddull Chicago

Bustad, Leo K. Animals, Aging, and the Aged. Minneapolis: University of Minnesota Press, 1980.

Dyfyniad MLA

Bustad, Leo K. Animals, Aging, and the Aged. University of Minnesota Press, 1980.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.