Archer, J. (1991). As the crow flies. HarperCollins, Coronet Books.
Cita Chicago (17th ed.)Archer, Jeffrey. As the Crow Flies. New York : Hodder: HarperCollins, Coronet Books, 1991.
Cita MLA (8th ed.)Archer, Jeffrey. As the Crow Flies. HarperCollins, Coronet Books, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.