Human Resource Department Recommendation Letter

I’m working on a english question and need guidance to help me learn.

1. Written Recommendation for a colleague who has applied for a job (minimum of one page in length). Pretend a friend or colleague has applied to a real company and has asked you for a letter of recommendation. Criteria: clearly addresses audience and purpose and use of appropriate tone. The letter must be in business letter format (pg. 39 in the reader) and addressed to a real company. Make sure you include contact information, phone number or email address. Electronic submission required in Microsoft Word (doc or .docx) or PDF. Other formats- Google Docs, Pages, Works, etc. are not accepted. No emailed copy.