You will probably need to include a reference related to your current employment, so is their a co-worker that would work, rather than a manager. Barring that try to use community members you have dealt with on some level that are highly respected (church officials, local government members, person of high standing in local organizations, school officials). If you have worked with any of these people in groups or organizations outside of your employment they at least can speak to you abilities to organize, complete tasks, work in group environments, etc.
Hope this gives you some ideas, and good luck in finding your new career.