Lay sermons, addresses, and reviews / by Thomas Henry Huxley. - Huxley, Thomas Henry, 1825-1895. (OLS)http://pul/name/16112 (Macmillan and Co., 1874)

Einführung in das Studium der Erziehungswissenschaft / Hans-Jochen Gamm. - Gamm, Hans-Jochen. (OLS)http://pul/name/33064 (List, 1974)
Contiene indici.
Bibliografia in appendice.