diff --git a/zfs_bootstrap_be.sh b/zfs_bootstrap_be.sh
index 58ff314..c933cc7 100644
--- a/zfs_bootstrap_be.sh
+++ b/zfs_bootstrap_be.sh
@@ -80,6 +80,7 @@ zfs set compression=lz4 tank
 
 # Create a very minimal ZFS Boot Environment Layout
 # https://wiki.freebsd.org/BootEnvironments
+# https://klarasystems.com/articles/managing-boot-environments/
 echo "Creating zfs boot-environment layout"
 zfs create -o mountpoint=none tank/ROOT
 zfs create -o mountpoint=/ tank/ROOT/default