@misc{Bock_Elfried_(1875-1933)_Die,
 author={Bock, Elfried (1875-1933)},
 address={München},
 howpublished={online},
 publisher={Franz Hanfstaengl},
 language={ger},
 title={Die deutsche Graphik},
 type={książka},
 keywords={grafika niemiecka},
}