Читать книгу The theory and practice of argumentation and debate - Victor Alvin Ketcham - Страница 39

SUMMARY OF THE SOURCES OF EVIDENCE

1. Personal knowledge.

2. Personal interviews.

3. Personal letters.

4. Current literature.

5. Standard literature.

6. Special documents.

(1) Reports and pamphlets issued by organizations.

(2) Reports and documents issued by the government.