Tohutoro APA (7th ed.)

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

Tohutoru Kātū Chicago (17th ed.)

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

Tohutoro MLA (9th ed.)

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