Rhythms Complete - Bass Clef / Charles Colin / Bowe - Charles Colin [Bass Clef]

Known as The Bible of Syncopated Rhythms, Rhythms Complete is the most widely used primer in the world for teaching rhythm, syncopation and phrasing, employing a very melodic format of 82 exercises in rhythmic structures and combinations of rhythms.
It requires time, practice, and repetition to master, however once you can read this in 4/4 and cut time correctly, you will be able to read anything.
While written especially for the beginning/intermediate levels, it is also used by advanced players as a daily practice book to maintain facility.