The book is finally out in hardcopy! Published by Springer, it’s part of a new book series on Computational Synthesis and Creative Systems. Available from from Amazon US and Amazon UK, among other places.

The published version is:

• Noor Shaker, Julian Togelius, and Mark J. Nelson (2016). Procedural Content Generation in Games: A Textbook and an Overview of Current Research. Springer. ISBN 978-3-319-42714-0.

For those who use BibTeX:

@book{shaker2016procedural,
author={Shaker, Noor and Togelius, Julian and Nelson, Mark J.},
title={Procedural Content Generation in Games: A Textbook and an Overview of Current Research},
publisher={Springer},
year={2016}
}

Or for an individual chapter:

@incollection{togelius2016introduction,
author={Togelius, Julian and Shaker, Noor and Nelson, Mark J.},
title={Introduction},
booktitle={Procedural Content Generation in Games: A Textbook and an Overview of Current Research},
editor={Shaker, Noor and Togelius, Julian and Nelson, Mark J.},
pages={1--15},
publisher={Springer},
year={2016}
}