Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (9e éd.)

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