diff --git a/free-programming-books-de.md b/free-programming-books-de.md index f730ebe20..fdfde4fee 100644 --- a/free-programming-books-de.md +++ b/free-programming-books-de.md @@ -34,6 +34,7 @@ ### ABAP +* [Einstieg in ABAP](http://openbook.rheinwerk-verlag.de/einstieg_in_abap/) - Karl-Heinz Kühnhauser, Thorsten Franz * [SAP Code Style Guides - Clean ABAP](https://github.com/SAP/styleguides/blob/master/clean-abap/CleanABAP_de.md)