An Introduction to Software Testing by Nick Jenkins In summary - you are free: to copy, distribute, display, and perform the work and to make derivative works. You must attribute the work by directly mentioning the author's name. You may not use this work for commercial purposes and if you alter, transform, or build upon this work, you may distribute the resulting work only under a license identical to this one. For any reuse or distribution, you must make clear to others the license terms of this work. Any of these conditions can be waived if you get permission from the copyright holder. Your fair use and.