diff --git a/sbas/models.py b/sbas/models.py
index 430bb372..bd4af97e 100644
--- a/sbas/models.py
+++ b/sbas/models.py
@@ -94,6 +94,12 @@ class Question(QuestionBase):
         Category, on_delete=models.SET_NULL, null=True, blank=True
     )
 
+    sources = models.JSONField(
+        blank=True,
+        null=True,
+        help_text="List of source references for the question (e.g. article DOIs or StatDx IDs or Source file names).",
+    )
+
     finding = models.ManyToManyField(Finding, blank=True, related_name="sbas_questions")
     structure = models.ManyToManyField(Structure, blank=True, related_name="sbas_questions")
     condition = models.ManyToManyField(Condition, blank=True, related_name="sbas_questions")