Ken Said:

how to make a cover letter for a resume?

We Answered:

You put your address at the top left hand corner.
Followed by the company name and address at the right hand side.
Normally put the job reference you are applying for or position.
Dear Sir/Madam,
Explain where you saw the job vacancy, and that you would like to be considered for it.

Briefly explain why you would be suitable for the position, and list some positive things about you.

Then place the names of your references, and that you would be willing to attend an interview at their convenience.
Hope this helps.