It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
This image was acquired from
Keywords from Image Description:
phone screen technology mobile internet telephone smartphone blank device display digital smart iphone media ios black glasses stack paper knowledge library old literature book open information school study education wisdom textbook bookshelf read vintage cover text writing page print bookcase studying wood reading retro wooden brown
Page 2017 Free-images.com. All images are Public Domain