Marcie try these docs on my website and see if they help you. Look under calories do count. http://www.defineyourself-coaching.com/nutrition.htm
Id suggest Liam Rosen. Its tongue and cheek- but if you’re able to shift through it and cram the diet/exercise into a page it’ll really help clients. I usually cut out tidbits and tailor it to each client.
Be sure to cite.