diff --git a/right-fit-swap-for-laptop-hibernation-Ubuntu-20.04-full-ZFS-install.md b/right-fit-swap-for-laptop-hibernation-Ubuntu-20.04-full-ZFS-install.md
index 1efcdda..b8e32fd 100644
--- a/right-fit-swap-for-laptop-hibernation-Ubuntu-20.04-full-ZFS-install.md
+++ b/right-fit-swap-for-laptop-hibernation-Ubuntu-20.04-full-ZFS-install.md
@@ -76,6 +76,8 @@ ResultActive=yes
 
 ## configure hibernate to auto switch from sleep to hibernate
 
+source : [Linux Mint Forums : Enable Hibernation with LUKS on LVM and extras](https://forums.linuxmint.com/viewtopic.php?t=287015)
+
 edit : */etc/systemd/sleep.conf*
 
 And add this value to it (The number represents seconds you want to pass in sleep, after which the computer will switch to hibernation, so you can put it in 60 seconds or something short just to check it's working and after that you can put whatever ammount of time you want):