Do I need an official bank statement or can I use a bank balance confirmation letter for a Non-O visa application in Canberra?

The consensus among Australians who have applied for the Non-O visa through Canberra is that an official bank statement is required to demonstrate the necessary funds for the visa application, rather than just a bank balance confirmation letter. One user mentioned that they were able to provide additional documentation showing funding sources, which helped in their approval despite having slightly more than the required amount.