Advertising makes the familiar seem new. So this textbook includes quite a bit of original material as well as material contributed by other educators and industry professionals. The author has chosen the creative commons copyright attribution CC by SA-4.0 because she wants this resource to be able to be used and shared, but since she has used other resources in the text she wants to respect those authors and be clear that the original licensing needs to be respected.

See https://creativecommons.org/licenses/by-sa/4.0/ for more information on this license.

*For more information on OER licensing, refer to https://citycollegeoer.commons.gc.cuny.edu/creative-commons-license-p3/