* Sanders Mac Lane, _Categories for the Working Mathematician_, Springer, 1971.
* Benjamin C. Pierce, _Basic Category Theory for Computer Scientists_, MIT Press, 1991.
* Emily Riehl, _Category Theory in Context_, Courier Dover Publications, 2016.
* David Spivak, _Category Theory for the Sciences_, MIT Press, 2014.
* Bartosz Milewski, _Category Theory for Progammers_, Blurb Inc., 2019.