Improvisation in 2017

A Guide to Keith Johnstone's Theatresports(TM) by Johnstone, Keith

The Improv Handbook: The Ultimate Guide to Improvising in Comedy, Theatre, and Beyond by Frances-White, Deborah, Salinsky, Tom

Fools International eBook Vol II by Evans, Michael

Gorilla Theatre(TM): A Guide to Keith Johnstone's Gorilla Theatre(TM) by Stiles, Patti