Stephen G. Alter (14 June 2002). . Johns Hopkins University Press. ISBN 978-0-8018-7244-0.

Darwinism and the Linguistic Image: Language, Race, and Natural Theology in the Nineteenth Century

Stephen G. Alter (9 March 2005). . Johns Hopkins University Press. ISBN 978-0-8018-8020-9.

William Dwight Whitney and the Science of Language