Cita APA (7a ed.)

Hackl, E. (1989). Aurora's motive (1. American ed.). Knopf.

Cita Chicago Style (17a ed.)

Hackl, Erich. Aurora's Motive. 1. American ed. New York: Knopf, 1989.

Cita MLA (9a ed.)

Hackl, Erich. Aurora's Motive. 1. American ed. Knopf, 1989.