That article has full references down the bottom. The one I posted yesterday, the graph of outbreaks, was directly from the SA govt website. Its government data.

It is very hard to find fully referenced AND accurate data. I have even spoken to magazine publishers about it - everyone has trouble sourcing balanced info.

The Sears Vaccine Book is what I have heard to be very balanced and unbiased, but the vaccines are US based, so not all may apply to Australia.