Both APA and ABA recognise frizzle for ALL BREEDS. Judging them in their breed is a change since the standards were last printed, so you would need to refer to association meeting minutes. For ABA the change was approved 27 April 2007. The wording of these minutes is clear that this is to bring it in line with the APA, which made the change a year or two earlier.
My 2005 Bantam Standard specifically mentions RIR as a recognised frizzle breed.
My 2005 Bantam Standard specifically mentions RIR as a recognised frizzle breed.