https://www.mindtools.com/pages/article/newLDR_50.htm

http://www.yourleadershiplegacy.com/assessment/assessment.php

http://psychologytoday.tests.psychtests.com/bin/transfer?req=MTF8MzIwNXwyNDEwNDM3NnwxfDE=&refempt=1550669071.24104376.11