Cita APA

Gordon, C. H. 1., & Gordon, C. H. 1. (1972). Before Columbus: Links between the old world and ancient America (1. edition.). London: Turnstone.

Citación estilo Chicago

Gordon, Cyrus Herzl 1908-2001, y Cyrus Herzl 1908-2001 Gordon. Before Columbus: Links between the Old World and Ancient America. 1. edition. London: Turnstone, 1972.

Cita MLA

Gordon, Cyrus Herzl 1908-2001, y Cyrus Herzl 1908-2001 Gordon. Before Columbus: Links between the Old World and Ancient America. 1. edition. London: Turnstone, 1972.