Do not include your disability information upfront. Your resume should be centered on your skills, strengths and experience – like any other job candidate.
References will benefit you greatly. These should be included at the end of your resume. Your past work–experience is testament to your future work product, and providing employers with access to past employers will help outline your ability to perform the job regardless of disability status.
Outline your strengths and accomplishments – these should be the central theme of any cover letter, regardless of disability or other job status.
If you are addressing any physical limitations, outline solutions for the employer. For instance, you may have an issue with a visual impairment and can quickly address that your only accommodation will be a specific–type of computer monitor.