The requirements for the Public Universities are always more than Private Universities, but we can tell you to prepare the following documents:
- Application form,
- Language proficiency - TOEFL or equivalent (usually the private Universities are offering English preparation courses too),
- Official transcripts (High school, B.A., M.A),
- Some Universities asking for an Essay, it can be up to 1000 words,
- And maybe letters of recommendation,
- Curriculum Vitae (CV) or Resume,
- Photocopy of passport,
- If you have any additional documents maybe it can help.
But the best way to know what the requirements are is to Contact the University.