When adapting an OER under an open Creative Commons license, it is important to acknowledge the author(s) of the original work and itemize all substantial changes you made during the adaptation process in your new resource. Your acknowledgement of the source material will appear in an adaptation statement, your copyright statement, and in your itemized list of changes. 

Adaptation Statement

A statement clearly identifying the original source should be placed in the front matter or introduction of an adapted book or included with the copyright notice in an alternative format resource.  

In their Adaptation Guide Open Textbook, BCcampus Open Education suggests these best practices for your adaptation statement:

1. If a significant amount of new information has been added, briefly describe the content and where it can be found, e.g., as a new chapter or part of an existing one. Provide a title to the new work.
2. If significant changes have been made to existing material, describe what has been altered and where it can be found, by chapter or chapter section.
3. Overall updates and changes can be described with a general statement.

The adaptation statement should include the author and title of the original and adapted texts. For example:

Copyright Statement

A copyright statement is required for all OER (except OER in the public domain or those given a CC0 license) to attribute the original author and provide information on its original and new license. The copyright statement should include the title, author, and year of the original and adapted works. The statement should also include the original and new copyright license with a link to the Creative Commons license webpage as well as a short statement describing what the license grants. If there is space in your copyright statement area, a list of changes and additions to the original text can be included here, too. 

If you are publishing your book in Pressbooks, the copyright statement can be placed in the Copyright Notice on the Book Info page.

An example copyright statement:

Listing Changes and Additions

If you are regularly updating your adapted work over time or if you don't have room in your copyright notice to include a list of changes, the list should be included in the front matter of your resource. These changes can be itemized and listed as such:

If you are adapting an existing resource in the public domain or one with a CC0 license, there are no restrictions on how you use the original work, including no need to attribute the original author in your adaptation. Adapting a resource with any other Creative Commons license may require certain considerations before deciding on your own license.