Dilbert is a 22-book series with 22 primary works first released in 1991 with contributions by Scott Adams.
1991 • 1 Reader • 111 pages • 4
1993 • 3 Readers • 3
1994 • 2 Readers • 128 pages • 4
1995 • 4 Readers • 256 pages • 4
1996 • 2 Readers • 128 pages • 4.5
1997 • 4 Readers • 132 pages • 3
1998 • 1 Reader • 224 pages
2009 • 1 Reader
2010 • 1 Reader • 128 pages
2012 • 1 Reader • 208 pages
2016 • 1 Reader • 160 pages • 2
2018 • 1 Reader • 144 pages • 2