{{sfn | Perutz | Siebert | Winternitz | 2013 | p=}}

* {{cite book | last=Perutz | first=NA | last2=Siebert | first2=NA | last3=Winternitz | first3=NA | title=Pharmakologie der Haut Arƶneimittel Allgemeine Therapie | publisher=Springer-Verlag | date=2013-07-02 | isbn=3-7091-5330-1 | language=de}}

<ref name="o925">{{cite book | last=Perutz | first=NA | last2=Siebert | first2=NA | last3=Winternitz | first3=NA | title=Pharmakologie der Haut Arƶneimittel Allgemeine Therapie | publisher=Springer-Verlag | date=2013-07-02 | isbn=3-7091-5330-1 | language=de | page=}}</ref>