How to write a reference letter

According to Wikipedia, an employment reference letter can cover topics such as:

- the employee's tasks and responsibilities
- the duration of employment or tasks/ responsibilities
- the position relative to the author of the reference letter
- the employee's abilities, knowledge, creativity, intelligence
- the employee's qualifications (foreign languages, special skills)
- the employee's social attitude
- reason(s) of employment termination
- some text with the actual recommendation itself (e.g. 'I unequivocally recommend ... [name] as a ... [function/ role] and would be happy to hire him/ her again').

Here you have some useful links to help you write a REFERENCE LETTER:

Sample reference and recommendation letters
Daily Writing Tips
Writing reference letter
How to write a reference letter