The Dying of the Light: The Joseph Valachi Story
The definitive book on Joseph Valachi is:
Maas, Peter, The Valachi Papers, New York: Putnam, 1968.
His name is mentioned in many books on organized crime, but almost always they refer back to Maas as the source.
The other major reference is: Organized Crime and Illicit Traffic in Narcotics, Hearings before the Permanent Subcommittee on Investigations of the Committee on Government Operations, United States Senate, 88th Congress, First Session, Part One. U.S. Government Printing Office, Washington: 1963.