Here's an infographic that points out very clearly the content elements of a good cover letter.
Outstanding Cover Letter Examples | HR Manager Cover Letter Example
Here is a cover letter sample to give you some ideas and inspiration for writing your own cover letter.:
sample cover letter | Cover letter tips & guidelines
Everything You Need to Include in a Succesful Cover Letter
6 Easy Steps for Emailing a Resume and Cover Letter Attachment: How to Email Cover Letter and Resume Attachments
Jobberman Insider | How to write a Cover letter. - Jobberman Insider
Employment Application Letter - An application for employment, job application, or application form require applicants to accompany the form with a cover letter and a résumé.
cover letter - job application