diff --git a/pkg book.md b/pkg book.md
index ceb249e96..54db71f77 100644
--- a/pkg book.md	
+++ b/pkg book.md	
@@ -8,3 +8,6 @@
     - got accepted.
     - deadline for full chapter is [[2022-09-01]].
     - I'm shooting for having it ready by end of July.
+    - [[format]] https://personalknowledgegraphs.com/#/page/625ecc70-78c3-4a55-89f8-b6dbcffb878e
+      - "(Full chapter expected length: 5.000 - 10.000 words)"
+