@misc{Preyer_William_T._(1841–1897)_Elemente_1877,
 author={Preyer, William T. (1841–1897)},
 copyright={Public Domain},
 address={Jena},
 howpublished={online},
 year={1877},
 publisher={Verlag von Hermann Dufft},
 language={ger},
 title={Elemente der reinen Empfindungslehre},
 type={Text},
}