Cita APA (7a ed.)

Farmer, P. J. (1977). Time's last gift (Revised ed. 1 print.). Ballantine Books.

Cita Chicago Style (17a ed.)

Farmer, Philip José. Time's Last Gift. Revised ed. 1 print. New York: Ballantine Books, 1977.

Cita MLA (9a ed.)

Farmer, Philip José. Time's Last Gift. Revised ed. 1 print. Ballantine Books, 1977.