@misc{Petersen_Peter_(1884-1952)_Führunslehre,
 author={Petersen, Peter (1884-1952)},
 copyright={Pomorska Biblioteka Pedagogiczna w Gdańsku},
 howpublished={online},
 publisher={Julius Beltz},
 language={ger},
 type={książka},
 title={Führunslehre des Unterrichts},
 keywords={nauczanie-metodyka},
}