According to our Standard License credit attributions should be made as follows:
31. Credit Attributions and Copyright Notices for Editorial Uses of Images:
a) You shall provide a link back to www.bigstock.com (where applicable) -OR- provide a credit to the Bigstock contributor and to Bigstock in connection with the editorial use of any Image. Such credit shall be in substantially the following form: "Name of Artist/Bigstock.com"
In the event that an Image is used in connection with a film, television broadcast, documentary or other audo-video or multimedia project, you shall use reasonable commercial efforts to accord the Bigstock contributor and Bigstock a credit as provided above.
Should you have any questions regarding this policy please feel free to contact us at any time.