This is involved with my 'Need legal advice :(' thread, but if I collect a
statement from a previous neighbor, or someone who use to rent the
apartment I was previously in, and I want to use those as evidence in
court of our landlords wrong-doing...what do I need to do to 'validate'
their statements? What I mean is, if Jane Doe writes a letter saying
"Landlord X did/did not do this this and this" and signs it, is that enough
for a judge? Or does it need to have like a witness when she wrote it, or
does it need to be certified through the police or something? I want to
make sure I have more than enough evidence for our case so I would like
to get a few statements from some people.