diff --git a/src/quellen.bib b/src/quellen.bib
index 975a372..d34e717 100644
--- a/src/quellen.bib
+++ b/src/quellen.bib
@@ -1,11 +1,12 @@
-@online{structtutorialspoint,
-    title = {struct},
-    date = {04-2020},
-    url = {https://www.tutorialspoint.com/cprogramming/c_structures.htm},
+@misc{structtutorialspoint,
+    Title = {struct basics},
+    howpublished = {\url{https://www.tutorialspoint.com/cprogramming/c_structures.htm}},
+    note = {Aufgerufen: 2020-04}
 }
 
-@online{structchowto,
-    title = {struct},
-    date = {04-2020},
-    url = {http://www.c-howto.de/tutorial/strukturierte-datentypen/strukturen/},
+@misc{structchowto,
+    Title = {struct basics},
+    howpublished = {\url{http://www.c-howto.de/tutorial/strukturierte-datentypen/strukturen/}},
+    note = {Aufgerufen: 2020-04}
 }
+