Ok so I did a six month full time stint managing a mobile animal farm. Fantastic fun, I learned a ton as I had to learn about a million different animals. I also developed and delivered an education program which is right up my alley - I love teaching kids about animals. I was going to put this on my application but here's the thing. I dont have a referree for this job. It ended badly when I quit after six months of not being paid, which left me in financial ruin and having affected my mental and physical health. Not only will my former employer not give me a good reference but they have been actively slanderous towards me. Will it open a can of worms to include this experience on my application, considering I cant back it up with referee evidence?