How can I make a specific link in WordPress post do-follow?

Ibrahim Nadir November 15, 2012
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I have been attending a number of guest articles on my website and there are some of them whom I want to give a do-follow link while no-follow to others. Can someone help me how to make specific links do-follow, while leave the rest as no-follow? I’m using Yoast SEO Plugin just in case you want to know. My website is:

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