This book comes highly recommended by a good college buddy of mine on how to structure and deliver your pitch. I haven't actually read the book yet, but I watched the video interview linked below and thought it was very useful.

The key parts to me were how the brain works in processing and filtering information, as well as how to structure a pitch in a narrative format to maximize success. There are also some points about how to approach these meetings and command control over them, be in a position of power, etc - some may love this and some may hate it, so just take whatever works for you.