Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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