• Guidelines for amateur radio services in malaysia – MCMC

https://www.mcmc.gov.my/skmmgovmy/files/attachments/Guideline_Amateur_Radio_Service_2012.pdf

• Guideline on the Allocation of Call Sign to the Amateur Radio Service

https://www.skmm.gov.my/skmmgovmy/media/General/pdf/Guideline-on-the-Allocation-of-Call-Sign-to-the-Amateur-Radio-Service.pdf

• Ethics and Operating procedure for the Radio Amateur (Edition 3)

https://www.iaru-r1.org/index.php/downloads/func-startdown/19/

• IARU Emergency Telecommunications Guide

http://www.iaru.org/uploads/1/3/0/7/13073366/emcommguide_1sept2016.pdf