Genre
Textbooks
13
Problems, exercises, etc
10
Case studies
7
Sources
3
Cross-cultural studies
2
Anecdotes
1
Biography
1
Databases
1
Directories
1
Drawings
1
Electronic books
1
Handbooks, manuals, etc
1
Laboratory manuals
1
Outlines, syllabi, etc
1
Personal narratives, American
1
Style manuals
1
Terminology
1