Copyright License and Usage
The Evolution and Biology of Sex by Sehoya Cotner and Deena Wassenberg is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, except where otherwise noted. (See the link for more information.)
All images in the text, unless otherwise noted, are created by Windy Zheng and is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 2.0 Generic License. This states that all users are only allowed to download the images and share them with others as long as they credit the illustrator, but cannot change them in any way or use them commercially. (See the link for more information.)