A candidate should draft a resume in the formats like a reverse chronological resume, functional resume, combination resume etc. This can create a great impact on an employer and assists him or her to draft a successful job letter. Your cover letter should also be equally convincing. The cover letter is like a job application letter in which you cannot replicate your resume. In this type of a letter, you can mention your achievements. Similarly, even a reference letter should be drafted aptly so that an employer can find it easy take decision related to hiring you and offering you with a job letter.