Tony Hill & Carol Jordan

1995 • 44 Readers • 364 pages • 3.8

1997 • 22 Readers • 845 pages • 4.1

2002 • 12 Readers • 496 pages • 4

2004 • 9 Readers • 480 pages • 4.8

2012 • 1 Reader • 256 pages

2009 • 6 Readers • 501 pages • 5

2011 • 8 Readers • 402 pages • 4

2013 • 9 Readers • 438 pages • 4.4

2015 • 5 Readers • 383 pages • 4.7

2017 • 5 Readers • 424 pages • 4

2019 • 8 Readers • 416 pages • 3.5