@misc{Vetterlein_Ernst_Friedrich_Die,
 author={Vetterlein, Ernst Friedrich and (1873-1950).},
 howpublished={online},
 publisher={G. J. Göschen'sche Verlagshandlung},
 language={niemiecki},
 type={książka},
 title={Die Baukunst des Schulhauses},
 keywords={budynki szkolne},
}