APA

Merz E., Eichhorn K. H., Hansmann M. & Meinel K. (20020325). [Quality demands on continuing differential diagnostic sonography in prenatal diagnostics (DEGUM stage II) during the 18th to 22nd weeks of gestation]. : Ultraschall in der Medizin (Stuttgart, Germany : 1980).

Chicago

Merz E, Eichhorn K H, Hansmann M and Meinel K. 20020325. [Quality demands on continuing differential diagnostic sonography in prenatal diagnostics (DEGUM stage II) during the 18th to 22nd weeks of gestation]. : Ultraschall in der Medizin (Stuttgart, Germany : 1980).

Harvard

Merz E., Eichhorn K. H., Hansmann M. and Meinel K. (20020325). [Quality demands on continuing differential diagnostic sonography in prenatal diagnostics (DEGUM stage II) during the 18th to 22nd weeks of gestation]. : Ultraschall in der Medizin (Stuttgart, Germany : 1980).

MLA

Merz E, Eichhorn K H, Hansmann M and Meinel K. [Quality demands on continuing differential diagnostic sonography in prenatal diagnostics (DEGUM stage II) during the 18th to 22nd weeks of gestation]. : Ultraschall in der Medizin (Stuttgart, Germany : 1980). 20020325.