Should you include a summary of skills or references on a resume? What font is best?

I've been working on my resume a lot, and looking at lot of other people's examples, and I'm wondering:

1. Should you include a summary of skills?

2. Should you list your references?

3. What do you do if you dont want your coworkers/boss to find out you're leaving, but they're your only references?

4. Which font type is best?

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