How to Join AES, CAS or MPSE

To join AES as a student member you can go to their website:
http://aes.org/member_application_form/

To join CAS as a student member you can go to their website:
http://www.cinemaaudiosociety.org/membership/index.php

To join MPSE as a student member you can go to their website:
http://www.mpse.org/membership/membership.html#Student