Cita APA (7th ed.)

Smith, M. C. (1990). Polar star (1st Ballantine Books ed.). Ballantine Books.

Cita Chicago (17th ed.)

Smith, Martin Cruz. Polar Star. 1st Ballantine Books ed. New York: Ballantine Books, 1990.

Cita MLA (9th ed.)

Smith, Martin Cruz. Polar Star. 1st Ballantine Books ed. Ballantine Books, 1990.