Since Google supported rich snippets, everyone is stagger about the right markup format. Rich snippets are additive informational elements intended to help users with specific queries. To call to mind, there are three different markups: microdata, microformats and RDFa. Meanwhile Google has officially recommended to use microdata format to generate rich snippets. They suggest microdata but the other markups are also acceptable.
Supported content types
Businesses and organizations
Rich snippets testing Tool
You can easily test your implemented markup by using the Google rich snippets testing tool. If everything is fine, Google will crawl your website some day and discover your marked-data.