Style de citation APA (7e éd.)

Turtledove, H. (2002). Counting up, counting down (first.). Ballantine books.

Style de citation Chicago (17e éd.)

Turtledove, Harry. Counting Up, Counting Down. first. New York: Ballantine books, 2002.

Style de citation MLA (9e éd.)

Turtledove, Harry. Counting Up, Counting Down. first. Ballantine books, 2002.