A reference letter is used to give support or endorse someone who is applying for a job or for admission. In the introductory part of the letter, you should state who you are endorsing and the post he/she is applying for. Establish the connection you have with who you are endorsing; state how you know and how long you’ve known the person. Also, you include why you are qualified to write a reference letter for the person. In the body, you should provide specific information about your endorsee: you should provide an overview of the person’s skills and abilities as related to what he/she is applying for. Then you give reason why he/she is most suitable. In the concluding part of the letter, state that you would gladly provide more information if need be and provide how the organisation can contact you.