Genre
Messages
14
Sources
10
Case studies
4
Conference papers and proceedings
3
Congresses
3
Biographies
2
Periodicals
2
Quotations
2
Speeches
2
Dictionaries
1
Educational films
1
Encyclopedias
1
Handbooks and manuals
1
Inaugural addresses
1
Lectures
1
Literature
1
Serial publications
1
Sound recordings
1
Speaches
1
Statistics
1
Video recordings
1