diff --git a/src/contents/engineering.tsx b/src/contents/engineering.tsx
index 5c49713c2673667b12515dcf6ec762b0474fb29d..4d75177cd87521637fe47c928f72b9da2fe63604 100644
--- a/src/contents/engineering.tsx
+++ b/src/contents/engineering.tsx
@@ -9,6 +9,7 @@ import { useNavigation } from "../utils";
 import { TabScrollLink } from "../components/Link";
 import { InfoBox } from "../components/Boxes";
 import { DownloadLink } from "../components/Buttons";
+import EngPEsystems from "../sources/eng-pe-sources";
 
 
 
@@ -262,6 +263,9 @@ export function Engineering() {
                         <p></p> */}
                      </p>
                   </div>
+                  <section title="references" id="references">
+                     <EngPEsystems/>
+                  </section>
                   <br/>
                   <div className="row ">
                      <div className="col">