Are you looking for one article that makes the case for 30km/h in Oz? Check out the below ones.
The below article was published in 3 different places:
https://theconversation.com/busted-5-myths-about-30km-h-speed-limits-in-australia-160547
One Pager
We campaign for 30km/h to become the default speed limit on residential and urban streets in Australia.