APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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