LicenseFree for commercial use with attribution, you must credit the author.

For websites:

Please, copy this code on your website to accredit the author:

<a href="http://adastra.info/infographics/">Infographics created by Nina Piankova - adastra.info/infographics</a>

Paste this text on the final work so the authorship is known - for instance, in the acknowledgements chapter of a book-. :

<a href="http://adastra.info/infographics/">Infographics created by Nina Piankova - adastra.info/infographics</a>

License: https://creativecommons.org/licenses/by-nd/4.0/legalcode