How to Connect Website Badge / Link to Google+ Business Page
Type in your page’s ID and you will be able to create it again. You can see it live here at esotech.org at the footer and also the breadcrumb on inner pages.
You will have to add a bit of code to your header, and then use the link wherever you like. The link seems highly customizable if you know what you are doing. For example, setting height and width of the icon shouldn’t be a problem.
Here is a code snippet example for Esotech’s Page.
<!-- Place this tag in the <head> of your document--> <link href="https://plus.google.com/103467698593383507666/" rel="publisher" /> <!-- Place this tag where you want the badge to render--> <a href="https://plus.google.com/103467698593383507666/?prsrc=3" style="text-decoration: none;">
<img src="https://ssl.gstatic.com/images/icons/gplus-64.png" width="64" height="64" style="border: 0;">