Darko Mitrovic

<ul>
<li>Add Google+ Badge or Icon to your wordpress.</li>
<li>Display Badge in different languages</li>
<li>Very simple configuration.</li>
</ul>
Visit plugin site: 
http://www.darkomitrovic.com/wp-plugin/google-plus-page/
<h4>Languages</h4>
<ul>
<li>Arabic</li>
<li>Bulgarian</li>
<li>Catalan</li>
<li>Chinese</li>
<li>Croatian</li>
<li>Czech</li>
<li>Danish</li>
<li>Dutch</li>
<li>English</li>
<li>Estonian</li>
<li>Filipino</li>
<li>Finnish</li>
<li>French</li>
<li>German</li>
<li>Greek</li>
<li>Hebrew</li>
<li>Hindi</li>
<li>Hungarian</li>
<li>Indonesian</li>
<li>Italian</li>
<li>Japanese</li>
<li>Korean</li>
<li>Latvian</li>
<li>Lithuanian</li>
<li>Malay</li>
<li>Norwegian</li>
<li>Persian</li>
<li>Polish</li>
<li>Portuguese</li>
<li>Romanian</li>
<li>Russian</li>
<li>Serbian</li>
<li>Swedish</li>
<li>Slovak</li>
<li>Slovenian</li>
<li>Spanish</li>
<li>Thai</li>
<li>Turkish</li>
<li>Ukrainian</li>
<li>Vietnamese</li>
</ul>

Google+ for Page

Add the Google+ Badge or Icon to your website to increase engagement and create a lasting connection with your audience.

Mervin Praison

This plugin helps you add Google authorship markup to your WordPress site, allowing your Google Plus profile picture to appear in Google Search results.
Features: 
* Easy 4-step setup process 
* Multiple author support 
* Multisite compatible 
* Shortcode support

WP Google Authorship

Nice

Google Plus Profile Picture appear in Google Search. Very Easy to implement. Including Google authorship for multiple authors and multisite.

Google+ for Page vs WP Google Authorship