How to write an IOU when borrowing money from others?

Simple example:

receipt for a loan

The current borrower is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Borrower: _ _ _ _ _ _ (signature and handprint)

Lender: _ _ _ _ _ _ (autograph and handprint)

Witness: _ _ _ (signature and handprint)

date month year

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