With the development of drumming over the past 95 years one book, Progressive Steps to Syncopation for the Modern Drummer (Ted Baker),  has stood out and is brilliant for the developing drummer and contains short and long, 20 bar exercises to develop feel, timing and solid reading. The exercises develop incrementally with crotchet, quavers, swing and other interesting and tasteful combinations.  From West London Drum Tutor, drum teacher in Harrow, London. http://paltip.com/westlondonenglish/!4kmj