I'm trying to explain a concept to a research group that I am a junior member of via a 1 page summary. I have a very useful diagram in a book that I have a copy of but no electronic copy and no access to a scanner (I need to get this to them asap as there is a meeting scheduled). Is it acceptable/legal for me to essentially copy this diagram by reproducing a bad version of it myself in word/paint??? If so how do I reference it??