Best books on selling a contract in Real Estate

[Megan Elise McIlvaine]

So, I've listened to many podcast and attended several seminars on the topic of "wholesaling". When I say Wholesaling, I mean where a person puts a house under contract and sells the rights to the contract to an investor. I know the basics and have even met with local contractors and real estate agents to discuss the best way to estimate rehabs and find accurate comparables for the ARV but I am searching for books I can read that really get in to the nitty gritty of what is necessary and what I'll need to understand about laws and such.
If anyone has any recommendations that would be great! I live in Atlanta, GA if that helps with which books would be applicable to my area.
Thank you all!