I'm submitting to a conference, which has the following text in the call for papers:
Papers must be submitted in PDF format according to ACM guidelines and style files to fit within X pages including any diagrams and appendices, plus up to 1 additional page of references.
The ACM style files have the references before the appendix, but this text makes it seem like the references should be separate. How would you arrange the references and the appendix? Which would be placed first?