Seven Steps to Persuasive Cover Letters
http://swo-btlines.com/seven-steps-to-great-cover-letters/

Evans Fryer, Elizabeth and Judith Harper
Between the Lines
2007

Abstract:

Almost all technical writing benefits from the technique of persuasion. Grants and proposals must have persuasive elements to be effective; operating instructions should convince customers that they have bought the best product for the job; hospital literature should assure patients that they have chosen the most well-equipped place to recover from surgery; cover letters (and all correspondence with a prospective employer or client) should leave no doubt in the employer's mind about your excellent qualifications for the job or assignment under discussion.