Citation Style needed!

Julieschka

Hi Guys,

I am attending a German university, which has adopted the Chigaco Citation Style (Footnotes), but made some own "adaptions" to it.

Here are the rules which I need to follow:

Direct quotation
One author:
Schneider (2014): 123.

2 authors:
Schneider/Arndt (2010): 87.

3 authors:
Schneider/Arndt/Aal (2015): 15.

4+ authors:
Schneider et al (2011): 42.

Indirect citation
One author:
Vgl. Schneider (2014): 123.

2 authors:
Vgl. Schneider/Arndt (2010): 87.

3 authors:
Vgl. Schneider/Arndt/Aal (2015): 15.

4+ authors:
Vgl. Schneider et al. (2011): 42.

Several sources
Vgl. Adler (1985): 21, Meier et al. (2012): 55.

Having several sources, I need an alphabetical order of the Author's last names.

Can anyone help me, editing this?
Thank you in advance!
Best, J.