Cita APA (7a ed.)

MacLean, G. R. (1984). Danger at your door (1. print.). Crossway Books.

Cita Chicago Style (17a ed.)

MacLean, Gordon R. Danger at Your Door. 1. print. Westchester, Ill: Crossway Books, 1984.

Cita MLA (9a ed.)

MacLean, Gordon R. Danger at Your Door. 1. print. Crossway Books, 1984.