The Time-Relations of Mental Phenomena. N. D. C. Hodges, New York NY 1890, (Digitalisat).
Aspects of Modern Psychology. In: Hermann Oldenberg, Joseph Jastrow, Carl Heinrich Cornill: Epitomes of Three Sciences. Comparative Philology, Psychology, and Old Testament History. The Open Court Publishing Company, Chicago IL 1890, S. 57–100.
Fact and Fable in Psychology. Houghton, Mifflin and Company, Boston MA u. a. 1900, (Digitalisat).
The Subconscious. Houghton, Mifflin and Company, Boston MA u. a. 1906, (Digitalisat).
The Qualities of Men. An Essay in Appreciation. Houghton Mifflin Company, Boston MA u. a. 1910, (Digitalisat).
Character and Temperament.D. Appleton and Company, New York NY u. a. 1915, (Digitalisat).
Werner F. Bonin: Die großen Psychologen. Von der Seelenkunde zur Verhaltenswissenschaft. Forscher, Therapeuten und Ärzte (= ETB 10026 Hermes-Handlexikon). Econ-Taschenbuch-Verlag, Düsseldorf 1983, ISBN 3-612-10026-2.