Finally an extreme handsome tool for all Creative Commons bloggers, called Open Attribute. With this Firefox addon or Chrome extension, you've got the CC-license in two clicks from the source page where you're copying/linking CC material. It will look like the rule here, which i copied from their website with their tool:
in html:
Work found at https://openattribute.com/ / Open Attribute / CC BY 3.0
in plain text:
Work found at https://openattribute.com/ / Open Attribute (https://openattribute.com/) / CC BY 3.0 (https://creativecommons.org/licenses/by/3.0/)
link: https://openattribute.com/