https://officialarilinecancellation.zohodesk.com/portal/en/kb/articles/international-consumer-does-lufthansa-have-a-free-cancellation-policy
https://officialarilinecancellation.zohodesk.com/portal/en/kb/articles/letdoes-lufthansa-have-a-free-cancellation-policy
https://mforum.cari.com.my/forum.php?mod=viewthread&tid=5488115&extra=
https://mforum3.cari.com.my/forum.php?mod=viewthread&tid=5488113
https://mforum.cari.com.my/forum.php?mod=viewthread&tid=5488094